332354 + Interview Questions in Secondary School in Math

1.	What type of oil is traditionally used in oil lamps lit during Deepavali
Answer» Answer: *MUSTARD oil* Step-by-step explanation: Mustard oil is TRADITIONALLY used to lit LAMPS during DEEPAVALI.

1.

What type of oil is traditionally used in oil lamps lit during Deepavali

Answer»

Answer:

MUSTARD oil

Step-by-step explanation:

Mustard oil is TRADITIONALLY used to lit LAMPS during DEEPAVALI.

Discussion

2.	Conclusion on number system
Answer» Answer: number SYSTEM is a writing system for EXPRESSING number that is a mathematical notation for representing numbersThe place value pattern continues on to infinity in both directions; places not only become GREATER by moving to the left, but also become less as you move to the right. With only symbols we can represent infinitely LARGE quantities and infinitely small quantities. It's all part of the beautiful order of mathematics!

2.

Conclusion on number system

Answer»

Answer:

number SYSTEM is a writing system for EXPRESSING number that is a mathematical notation for representing numbersThe place value pattern continues on to infinity in both directions; places not only become GREATER by moving to the left, but also become less as you move to the right. With only symbols we can represent infinitely LARGE quantities and infinitely small quantities. It's all part of the beautiful order of mathematics!

Discussion

3.	R2V 301 (-3+-5)
Answer» Answer: 58000 Step-by-step EXPLANATION:

3.

R2V 301 (-3+-5)

Answer»

Answer:

58000

Step-by-step EXPLANATION:

Discussion

4.	Differentiate f(x) = tan (e^x)
Answer» Step-by-step explanation: Given: f ( X ) = tan ( e x ) Use the derivative RULES: d d x ( tan x ) = sec 2 x ; d d x ( e x ) = e x Using the chain RULE: Let u = e x ; u ' = e x f ( u ) = tan u f ' ( u ) = u ' sec 2 u f ' ( x ) = e x sec 2 ( e x )

4.

Differentiate f(x) = tan (e^x)

Answer»

Step-by-step explanation:

Given:

f

(

X

)

=

tan

(

e

x

)

Use the derivative RULES:

d

x

(

tan

x

)

=

sec

2

x

;

d

x

(

e

x

)

=

e

x

Using the chain RULE:

Let

u

=

e

x

;

u

'

=

e

x

f

(

u

)

=

tan

u

f

'

(

u

)

=

u

'

sec

2

u

f

'

(

x

)

=

e

x

sec

2

(

e

x

)

Discussion

5.	Please solve this step by step x^3 -2x^2+x - 6 = 0 , solve this cubic polynomial
Answer» Step-by-step EXPLANATION: x³-2x²+X-6=0 x³-2x²+x=6 x(x²-2x+1)=6 x(x²-x-x+1)=6 x[x(x-1)-1(x-1)]=6 x[(x-1)(x-1)]=6 x(x-1)²=6 x(x-1)(x-1)=6 *please MARK me as brainliest* x=6 x-1=6 x-1=6 x=6+1 x=6+1 x=7 x=7

5.

Please solve this step by step x^3 -2x^2+x - 6 = 0 , solve this cubic polynomial

Answer»

Step-by-step EXPLANATION:

x³-2x²+X-6=0

x³-2x²+x=6

x(x²-2x+1)=6

x(x²-x-x+1)=6

x[x(x-1)-1(x-1)]=6

x[(x-1)(x-1)]=6

x(x-1)²=6

x(x-1)(x-1)=6

please MARK me as brainliest

x=6 x-1=6 x-1=6

x=6+1 x=6+1

x=7 x=7

Discussion

6.	7/20+17/-45+-11/.gl J- O....M-- 30+-8/1
Answer» Answer: SORRY i don't no Step-by-step EXPLANATION: please Mark in BRILLIANT

6.

7/20+17/-45+-11/.gl J- O....M-- 30+-8/1

Answer»

Answer:

SORRY i don't no

Step-by-step EXPLANATION:

please Mark in BRILLIANT

Discussion

7.	Use each of the digits 1, 2, 3, 4, 5 and 6 once only, in this multiplication problem to make it correct.
Answer» ANSWER: =720 Step-by-step EXPLANATION: 1×2×3×4×5×6 =720

7.

Use each of the digits 1, 2, 3, 4, 5 and 6 once only, in this multiplication problem to make it correct.

Answer»

ANSWER:

=720

Step-by-step EXPLANATION:

1×2×3×4×5×6

=720

Discussion

8.	How will you show that (17112)+(17115) is composite number explain
Answer» Answer: If any number can be REPRESENTED in the form of PRODUCT of prime numbers then that number is COMPOSITE number. Hence , ( 17 X 11 x 2 ) + ( 17 x 11 x 5 ) is a composite number please mark me as the brainliest.......

8.

How will you show that (17112)+(17115) is composite number explain

Answer»

Answer:

If any number can be REPRESENTED in the form of PRODUCT of prime numbers then that number is COMPOSITE number. Hence , ( 17 X 11 x 2 ) + ( 17 x 11 x 5 ) is a composite number

please mark me as the brainliest.......

Discussion

9.	Fact family of 2,9,7
Answer» ANSWER: hi what do U WANT .........

9.

Fact family of 2,9,7

Answer»

ANSWER:

hi

what do U WANT .........

Discussion

10.	১ম রুকু থেকে ৪র্থ রুকু পর্যন্ত আলােচিত আয়াতসমূহের আলোকে মুমিন, মুনাফিক ও কাফিরের বৈশিষ্ট্যসমূহ।উওর কোথায় আছে
Answer» ANSWER: SORRY can't UNDERSTAND BENGALI

10.

১ম রুকু থেকে ৪র্থ রুকু পর্যন্ত আলােচিত আয়াতসমূহের আলোকে মুমিন, মুনাফিক ও কাফিরের বৈশিষ্ট্যসমূহ।উওর কোথায় আছে

Answer»

ANSWER:

SORRY can't UNDERSTAND BENGALI

Discussion

11.	Oh why dear jiya why ur account will got deleted :(Siri I'm priya9th class15years don't take me lightly :)spammers. be away
Answer» PLEASE REPLY why you LEAVE this APP?

11.

Oh why dear jiya why ur account will got deleted :(Siri I'm priya9th class15years don't take me lightly :)spammers. be away

Answer»

PLEASE REPLY why you LEAVE this APP?

Discussion

12.	the hyptenuse of right triangle is 1 and half metre and another side half metre calculate perimetre correct to centimetre?
Answer» ANSWER: its the answer...........

12.

the hyptenuse of right triangle is 1 and half metre and another side half metre calculate perimetre correct to centimetre?

Answer»

ANSWER:

its the answer...........

Discussion

13.	If the ratio of two supplementary anglesin 5:7 then find them
Answer» Solution Since, Supplementary Angles = 180° So, 5:7 =180° [Let 5:7 =5X and 7x ] 5x+7x=180° 12x =180° x=180/12 Hence, x = 15 ANS. Hope it helps.

13.

If the ratio of two supplementary anglesin 5:7 then find them

Answer»

Solution

Since, Supplementary Angles = 180°

So, 5:7 =180° [Let 5:7 =5X and 7x ]

5x+7x=180°

12x =180°

x=180/12

Hence, x = 15 ANS.

Hope it helps.

Discussion

14.	Let us love one another question tags
Answer» ANSWER: let us LOVE one ANOTHER,shall we?

14.

Let us love one another question tags

Answer»

ANSWER:

let us LOVE one ANOTHER,shall we?

Discussion

15.	Arrange in ascending order -5,8,-2,0,4
Answer» ANSWER: -5,-2,0,4,8 PLEASE FOLLOW me.....please

15.

Arrange in ascending order -5,8,-2,0,4

Answer»

ANSWER:

-5,-2,0,4,8

PLEASE FOLLOW me.....please

Discussion

16.	If in the equation x + 2y = 10, the value of y is 6, then the value of x will be
Answer» Answer: x+2y=10 x+2(6)=10 x+12=10 x=10-12 x=(-2) $x = ( - 2)$ Step-by-step EXPLANATION: Answer...MARK me brainliest and FOLLOW me

16.

If in the equation x + 2y = 10, the value of y is 6, then the value of x will be

Answer»

Answer:

x+2y=10

x+2(6)=10

x+12=10

x=10-12

x=(-2)

$x = ( - 2)$

Step-by-step EXPLANATION:

Answer...MARK me brainliest and FOLLOW me

Discussion

17.	The number of trucks entering in acity in 5 consecutive months M1,M2,M3,M4,M5 are 1000, 1060,940,1140 and 1020. What isthe ratio no trucksmonth M2&M5?
Answer» Step-by-step EXPLANATION: #❤️Bolo RADHE radhe ❤️

17.

The number of trucks entering in acity in 5 consecutive months M1,M2,M3,M4,M5 are 1000, 1060,940,1140 and 1020. What isthe ratio no trucksmonth M2&M5?

Answer»

Step-by-step EXPLANATION:

#❤️Bolo RADHE radhe ❤️

Discussion

18.	126. For 333,999,888, 777, 666,555, 444Rank of 1st quartile is(b) 1(c) 2(d) 7(a) 3
Answer» ANSWER: Q1=n+1÷4 =7+1÷4 =8÷4 =2 Step-by-step EXPLANATION:

18.

126. For 333,999,888, 777, 666,555, 444Rank of 1st quartile is(b) 1(c) 2(d) 7(a) 3

Answer»

ANSWER: Q1=n+1÷4

=7+1÷4

=8÷4

=2

Step-by-step EXPLANATION:

Discussion

19.	Application of coordinate geometry in daily life a ) origin d) mathematician
Answer» Answer: origin in CORRECT FRIEND MARK as brainiest Pls Step-by-step EXPLANATION:

19.

Application of coordinate geometry in daily life a ) origin d) mathematician

Answer»

Answer: origin in CORRECT FRIEND MARK as brainiest

Pls

Step-by-step EXPLANATION:

Discussion

20.	If sinA =3/5 ,then find the value of sin3A
Answer» ANSWER: SINA =3/5 Cosa =4/5 Sin3A=3SinA-4Sin³A *=33/5-427/125* =9/5-108/125 =225-108/125 =117/125 HOPE HELPED! Step-by-step EXPLANATION:

20.

If sinA =3/5 ,then find the value of sin3A

Answer»

ANSWER: SINA =3/5

Cosa =4/5

Sin3A=3SinA-4Sin³A

=3*3/5-4*27/125

=9/5-108/125

=225-108/125

=117/125

HOPE HELPED!

Step-by-step EXPLANATION:

Discussion

21.	Which of the following Roman numerals can not be repeated up to a maximum of 3 times?(A) X(B)C(C) M(D) Dre represented by the letter,
Answer» Answer: I think D . And pls mark me as BRAINLIEST and THANK me pls

21.

Which of the following Roman numerals can not be repeated up to a maximum of 3 times?(A) X(B)C(C) M(D) Dre represented by the letter,

Answer»

Answer:

I think D . And pls mark me as BRAINLIEST and THANK me pls

Discussion

22.	Find(1/5a³+b²)²Solve it by using the identity...Plz answer my question...
Answer» ANSWER: I don't know the answer but I WANT to chat with SOMEONE PLEASE MARK me as brainlest please

22.

Find(1/5a³+b²)²Solve it by using the identity...Plz answer my question...

Answer»

ANSWER:

I don't know the answer but I WANT to chat with SOMEONE PLEASE MARK me as brainlest please

Discussion

23.	Find the value of x¹/² y-¹ and z²/³ when x=9,y=3 and z=8
Answer» ANSWER: Step-by-step explanation: ANSWER Given equations are x² + y² + z² = 525 xy + yz + zx = 50 Per algebraic identity. (X + y + z )² = x² + y² + z² + 2XY + 2yz + 2zx (x + y + z )² = x² + y² + z² + 2(xy+yz+zx) = 525+2(50) = 625 x+y+z = √625 = ±25 After squareroot will be cancelled , the number BECOME ±25. ( x + y + z )² = x² + y² + z² + 2xy +2yz +2zx ( ±25 )² = 525 + 2( 50 ) 625 = 525 + 100 625 = 625 L.H.S = R.H.S. So , the answer is ' ±25 '.

23.

Find the value of x¹/² y-¹ and z²/³ when x=9,y=3 and z=8

Answer»

ANSWER:

Step-by-step explanation:

ANSWER

Given equations are x² + y² + z² = 525

xy + yz + zx = 50

Per algebraic identity.

(X + y + z )² = x² + y² + z² + 2XY + 2yz + 2zx

(x + y + z )² = x² + y² + z² + 2(xy+yz+zx)

= 525+2(50)

= 625

x+y+z = √625

= ±25

After squareroot will be cancelled , the number BECOME ±25.

( x + y + z )² = x² + y² + z² + 2xy +2yz +2zx

( ±25 )² = 525 + 2( 50 )

625 = 525 + 100

625 = 625

L.H.S = R.H.S.

So , the answer is ' ±25 '.

Discussion

24.	What is the maximum value of coefficient of variation?
Answer» ANSWER: What is the maximum value of σxx¯, the coefficient of variation, over all choices of the xi's in the interval [0,c]? The maximum value that I can find for σxx¯ is N−1−−−−−√ which is achieved when n−1 of the xi have value 0 and the remaining (outlier) xi has value c, giving x¯=cn, 1n∑x2i=c2n⇒σx=c2n−c2n2−−−−−−−√=cnn−1−−−−−√. But this does not depend on c at all, and I am WONDERING if larger VALUES, possibly dependent on both n and c, can be achieved.

24.

What is the maximum value of coefficient of variation?

Answer»

ANSWER:

What is the maximum value of σxx¯, the coefficient of variation, over all choices of the xi's in the interval [0,c]?

The maximum value that I can find for σxx¯ is N−1−−−−−√ which is achieved when n−1 of the xi have value 0 and the remaining (outlier) xi has value c, giving

x¯=cn, 1n∑x2i=c2n⇒σx=c2n−c2n2−−−−−−−√=cnn−1−−−−−√.

But this does not depend on c at all, and I am WONDERING if larger VALUES, possibly dependent on both n and c, can be achieved.

Discussion

25.	3.Mr Azhar bought a washing machine. He had to pay an additional Rs 90which was a 15% sales tax. How much did the washing machine cost?
Answer» Answer: Let cost of washing MACHINE =Rs.x Sales TAX. 15% I. e. Rs. 90 si xX15/100=90 x=90X100/15 =600 Washing machine cost Rs. 600

25.

3.Mr Azhar bought a washing machine. He had to pay an additional Rs 90which was a 15% sales tax. How much did the washing machine cost?

Answer»

Answer:

Let cost of washing MACHINE =Rs.x

Sales TAX. 15%

I. e. Rs. 90

si

xX15/100=90

x=90X100/15

=600

Washing machine cost Rs. 600

Discussion

26.	5. Arun has 34% of 1,65,000 and Reena has 28% of 1,95,000. Who hasmore money?
Answer» ANSWER: ANSWER OF THIS QUESTION IS *ARUN*

26.

5. Arun has 34% of 1,65,000 and Reena has 28% of 1,95,000. Who hasmore money?

Answer»

ANSWER:

ANSWER OF THIS QUESTION IS ARUN

Discussion

27.	(ii) whose abscissa is -3 and lies on the x-axis.28. In which quadrant the following points lie? (3, 2), (2, -3), (-4, 4) and (-2,-3)
Answer» Abscissa is y-axis Ordinate is x-axis (+,+)LIES in 1st QUADRANT. (-,+)lies in 2nd quadrant. (-,-)lies in 3rd quadrant. (+,-)lies in 4rth quadrant. Answer is.... (3,2)lies in 1st quadrant. (2,-3)lies in 4rth quadrant. (-4,4)lies in 2nd quadrant. (-2-3)lies in 3rd quadrant. -3 lies in 4rth quadrant on the x-axis

27.

(ii) whose abscissa is -3 and lies on the x-axis.28. In which quadrant the following points lie? (3, 2), (2, -3), (-4, 4) and (-2,-3)

Answer»

Abscissa is y-axis

Ordinate is x-axis

(+,+)LIES in 1st QUADRANT.
(-,+)lies in 2nd quadrant.
(-,-)lies in 3rd quadrant.
(+,-)lies in 4rth quadrant.

Answer is....

(3,2)lies in 1st quadrant.
(2,-3)lies in 4rth quadrant.
(-4,4)lies in 2nd quadrant.
(-2-3)lies in 3rd quadrant.
-3 lies in 4rth quadrant on the x-axis

Discussion

28.	বৈজ্ঞানিক প্রক্রিয়ার ধাপগুলাে কী কী হবে? ৩/তোমার একটি বইয়ের দৈর্ঘ্য ২০ সেমি, প্রস্থ ১৫ সেমি এবং উচ্চতাসেমি. এরুপ ৫০টি বইয়ের আয়তন কত?আte came নিলেনh
Answer» Answer: SORRY which language is these Step-by-step explanation: PLZ mark me as BRAINLIEST

28.

বৈজ্ঞানিক প্রক্রিয়ার ধাপগুলাে কী কী হবে? ৩/তোমার একটি বইয়ের দৈর্ঘ্য ২০ সেমি, প্রস্থ ১৫ সেমি এবং উচ্চতাসেমি. এরুপ ৫০টি বইয়ের আয়তন কত?আte came নিলেনh

Answer»

Answer:

SORRY which language is these

Step-by-step explanation:

PLZ mark me as BRAINLIEST

Discussion

29.	Factorise=(3x-4y)²-25z²
Answer» Step-by-step EXPLANATION: (3x-4y)²-25z² 9x²+16y²-24xy-25z² Answer (A-B)² a²+b²-2ab

29.

Factorise=(3x-4y)²-25z²

Answer»

Step-by-step EXPLANATION:

(3x-4y)²-25z²

9x²+16y²-24xy-25z²

Answer

(A-B)²

a²+b²-2ab

Discussion

30.	Is 20 the median of the data 12, 19, 20, 14.and 16?
Answer» Answer: No its wrong Explanation First arrange the DATA in ASCENDING ORDER 12, 14, 16, 19, 20 Here, n = 5 which is odd. Hence median is given by $( \frac{n + 1}{2} )th \: \: observation \\ = \frac{5 + 1}{2} th \: observation \\ = 3rd \: observation \\ = 16$

30.

Is 20 the median of the data 12, 19, 20, 14.and 16?

Answer»

Answer:

No its wrong

Explanation

First arrange the DATA in ASCENDING ORDER

12, 14, 16, 19, 20

Here, n = 5 which is odd.

Hence median is given by

$( \frac{n + 1}{2} )th \: \: observation \\ = \frac{5 + 1}{2} th \: observation \\ = 3rd \: observation \\ = 16$

Discussion

31.	Find the mean median and mode of first 10 whole number.
Answer» FIRST 10 whole numbers = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 Mean = $\frac{0+ 1+2+3+ 4+ 5+6+7+8+9}{10} = 4.5$ There is no mode as all numbers appear once. Median = $\frac{5th+6th}{2} = 4.5$

31.

Find the mean median and mode of first 10 whole number.

Answer»

FIRST 10 whole numbers = 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Mean = $\frac{0+ 1+2+3+ 4+ 5+6+7+8+9}{10} = 4.5$

There is no mode as all numbers appear once.

Median = $\frac{5th+6th}{2} = 4.5$

Discussion

32.	Divided rupees 1650among X, Yand Z in the ratio 3:5:6
Answer» Answer: 353,589,707 Step-by-step explanation: 3+5+6is 14 DIVIDED by 1650 is 117 multiply by 3 is 353. 117 multiply by 5 is 589 117 multiply by 6 is 707 hence,xi s EQUAL to 353 y is equal to 589 z is equal to 707 THANKS for giving me 5 points

32.

Divided rupees 1650among X, Yand Z in the ratio 3:5:6

Answer»

Answer:

353,589,707

Step-by-step explanation:

3+5+6is 14 DIVIDED by 1650 is 117 multiply by 3 is 353. 117 multiply by 5 is 589 117 multiply by 6 is 707 hence,xi s EQUAL to 353 y is equal to 589 z is equal to 707 THANKS for giving me 5 points

Discussion

33.	Find the greatest number 5 digits divisible by 2 4 6 810
Answer» Answer: 99960...............

33.

Find the greatest number 5 digits divisible by 2 4 6 810

Answer»

Answer:

99960...............

Discussion

34.	Find the following using properties 237×9999+237
Answer» Step-by-step EXPLANATION: $237 \times 9999 + 237 \\ = \: 273 \times 10000 \\ = 2730000$ HOPE it'll HELP you

34.

Find the following using properties 237×9999+237

Answer»

Step-by-step EXPLANATION:

$237 \times 9999 + 237 \\ = \: 273 \times 10000 \\ = 2730000$

HOPE it'll HELP you

Discussion

35.	The number of positive integer x which satisfy the condition [x/99] = [x/101] , where x is greatest Integer function
Answer» ANSWER: THANKS for FREE POINTS..............

35.

The number of positive integer x which satisfy the condition [x/99] = [x/101] , where x is greatest Integer function

Answer»

ANSWER:

THANKS for FREE POINTS..............

Discussion

36.	(2a+3b) cube - (2a-3b) cube
Answer» ANSWER: answer is in the PIC....

36.

(2a+3b) cube - (2a-3b) cube

Answer»

ANSWER:

answer is in the PIC....

Discussion

37.	How can I calculate the value of A and B matrix from the value of 2A+B and A+2B matrix
Answer» ANSWER: I'm SORRY DEAR I don't have IDEA I'm REALLY really sorry dear

37.

How can I calculate the value of A and B matrix from the value of 2A+B and A+2B matrix

Answer»

ANSWER:

I'm SORRY DEAR I don't have IDEA I'm REALLY really sorry dear

Discussion

38.	A shopkeeper sells his goods at a profit of 20% after giving 10% discount onthe marked price. Find how much more he marks his goods above the cost price.
Answer» Answer: 10%PROFIT thank you Step-by-step explanation: profit is 20% DISCOUNT is 10% 10-20 is EQUAL to 10 so the answer is 10

38.

A shopkeeper sells his goods at a profit of 20% after giving 10% discount onthe marked price. Find how much more he marks his goods above the cost price.

Answer»

Answer:

10%PROFIT thank you

Step-by-step explanation:

profit is 20% DISCOUNT is 10% 10-20 is EQUAL to 10 so the answer is 10

Discussion

39.	Find 3 a.m. between 3 and 9 search answer
Answer» ANSWER: THE ANSWER IS WILL BE THE 6

39.

Find 3 a.m. between 3 and 9 search answer

Answer»

ANSWER:

THE ANSWER IS WILL BE THE 6

Discussion

40.	Find the greatest number of 4 digits which is exactly divisible by 2,3,8 and 10
Answer» 9960 Is the greatest 4 digits which is EXACTLY DIVISIBLE by 2,3,8 and 10

40.

Find the greatest number of 4 digits which is exactly divisible by 2,3,8 and 10

Answer»

9960

Is the greatest 4 digits which is EXACTLY DIVISIBLE by 2,3,8 and 10

Discussion

41.	Write the prime factorisation of the following numbers:(b) 48(c) 84(d) 120(f) 840(g) 720(h) 980
Answer» ANSWER: sorry brainly will TAKE only 1 question.. MAKE me as braiNliest

41.

Write the prime factorisation of the following numbers:(b) 48(c) 84(d) 120(f) 840(g) 720(h) 980

Answer»

ANSWER:

sorry brainly will TAKE only 1 question..

MAKE me as braiNliest

Discussion

42.	T=Σr×p how to pronounce
Answer» ANSWER: EROP answerrrrrrrrrrr

42.

T=Σr×p how to pronounce

Answer»

ANSWER:

EROP

answerrrrrrrrrrr

Discussion

43.	If,tan²A= 1+ 2 tan²B.Then prove, 2sin²A = 1 +sin^2 B
Answer» Step-by-step EXPLANATION : Given : tan²A = 1 + 2tan²B To prove : 2sin²A = 1 + sin²B Answer : $<klux>TAN</klux>^2A=1+2tan^2B \\\\\\ \frac{<klux>SIN</klux>^2A}{<klux>COS</klux>^2A} =1+2\frac{sin^2B}{cos^2B} \\\\\\ \frac{sin^2A}{cos^2A} =\frac{cos^2B+2sin^2B}{cos^2B} \\\\\\ sin^2A.cos^2B =cos^2A(cos^2B+2sin^2B) \\\\\\ sin^2A(1-sin^2B)=(1-sin^2A)(1-sin^2B+2sin^2B) \\\\\\ sin^2A-sin^2Asin^2B = (1-sin^2A)(1+sin^2B) \\\\\\ sin^2A-sin^2A.sin^2B=1(1+sin^2B)-sin^2A(1+sin^2B) \\\\\\ sin^2A-sin^2A.sin^2B =1+sin^2B-sin^2A-sin^2A.sin^2B \\\\\\ sin^2A=1+sin^2B-sin^2A \\\\\\ sin^2A+sin^2A=1+sin^2B \\\\\\ \boxed{2sin^2A=1+sin^2B}$ _________________________ $\bf \longrightarrow tan \theta =\frac{sin\theta}{cos\theta} \\\\\\ \longrightarrow sin^2\theta+cos^2\theta=1 \\ => cos^2\theta=1-sin^2\theta$ _________________________ Some identities : sin² A + cos² A = 1 1+tan² A = sec² A 1+cot² A = cosec² A sin (x+y) = sin(x)cos(y) + cos(x)sin(y) cos(x+y) = cos(x)cos(y) – sin(x)sin(y) tan(x+y) = (tan x + tan y) / [ (1−tan x)(tan y) ] sin(x–y) = sin(x)cos(y) – cos(x)sin(y) cos(x–y) = cos(x)cos(y) + sin(x)sin(y) tan(x−y) = (tan x–tan y) / [ (1+tan x)( tan y) ]

43.

If,tan²A= 1+ 2 tan²B.Then prove, 2sin²A = 1 +sin^2 B

Answer»

Step-by-step EXPLANATION :

Given :

tan²A = 1 + 2tan²B

To prove :

2sin²A = 1 + sin²B

Answer :

$<klux>TAN</klux>^2A=1+2tan^2B \\\\\\ \frac{<klux>SIN</klux>^2A}{<klux>COS</klux>^2A} =1+2\frac{sin^2B}{cos^2B} \\\\\\ \frac{sin^2A}{cos^2A} =\frac{cos^2B+2sin^2B}{cos^2B} \\\\\\ sin^2A.cos^2B =cos^2A(cos^2B+2sin^2B) \\\\\\ sin^2A(1-sin^2B)=(1-sin^2A)(1-sin^2B+2sin^2B) \\\\\\ sin^2A-sin^2Asin^2B = (1-sin^2A)(1+sin^2B) \\\\\\ sin^2A-sin^2A.sin^2B=1(1+sin^2B)-sin^2A(1+sin^2B) \\\\\\ sin^2A-sin^2A.sin^2B =1+sin^2B-sin^2A-sin^2A.sin^2B \\\\\\ sin^2A=1+sin^2B-sin^2A \\\\\\ sin^2A+sin^2A=1+sin^2B \\\\\\ \boxed{2sin^2A=1+sin^2B}$

_________________________

$\bf \longrightarrow tan \theta =\frac{sin\theta}{cos\theta} \\\\\\ \longrightarrow sin^2\theta+cos^2\theta=1 \\ => cos^2\theta=1-sin^2\theta$

_________________________

Some identities :

sin² A + cos² A = 1

1+tan² A = sec² A

1+cot² A = cosec² A

sin (x+y) = sin(x)cos(y) + cos(x)sin(y)

cos(x+y) = cos(x)cos(y) – sin(x)sin(y)

tan(x+y) = (tan x + tan y) / [ (1−tan x)(tan y) ]
sin(x–y) = sin(x)cos(y) – cos(x)sin(y)
cos(x–y) = cos(x)cos(y) + sin(x)sin(y)
tan(x−y) = (tan x–tan y) / [ (1+tan x)( tan y) ]

Discussion

44.	Convert Rs. 90,000 in to Malaysian currency
Answer» Answer: 5499 MALAYSIAN rignitt

44.

Convert Rs. 90,000 in to Malaysian currency

Answer»

Answer:

5499 MALAYSIAN rignitt

Discussion

45.	Stake whichare the perfectsquares by observing ,(m) 123of the followingthe units place digit.
Answer» Answer: 123 is not a PERFECT SQUARE Step-by-step EXPLANATION: thank you have a NICE day

45.

Stake whichare the perfectsquares by observing ,(m) 123of the followingthe units place digit.

Answer»

Answer:

123 is not a PERFECT SQUARE

Step-by-step EXPLANATION:

thank you

have a NICE day

Discussion

46.	14. A, B and C enter into a partnership and their shares are in ratio 1/3 : 1/4: 5/12, after 3 months B withdraws half of his capital after 2 months A withdraws 3/8th of his investment and after 3 months C withdraws half of his investment What is the share of C in a profit of Rs 35,20,000 at the end of the year(in lac of rupees)? options as follows(a)15(b) 15.5(c) 16(d) 17.5
Answer» Answer: kya APP HINDI me likh sakte HAI????

46.

14. A, B and C enter into a partnership and their shares are in ratio 1/3 : 1/4: 5/12, after 3 months B withdraws half of his capital after 2 months A withdraws 3/8th of his investment and after 3 months C withdraws half of his investment What is the share of C in a profit of Rs 35,20,000 at the end of the year(in lac of rupees)? options as follows(a)15(b) 15.5(c) 16(d) 17.5

Answer»

Answer:

kya APP HINDI me likh sakte HAI????

Discussion

47.	Amara needs 454545 kilograms of meat to feed her 222 pet dragons each day. Each pet dragon eats the same amount of meat.How many kilograms of meat does Amara need to feed 444 pet dragons each day?
Answer» ANSWER: The spice trade REFERS to the trade between HISTORICAL civilizations in ... Arab traders eventually took over conveying GOODS via the Levant and ... had, since the early 15th century, begun to EXPLORE northern Africa under Henry the Navigator.

47.

Amara needs 454545 kilograms of meat to feed her 222 pet dragons each day. Each pet dragon eats the same amount of meat.How many kilograms of meat does Amara need to feed 444 pet dragons each day?

Answer»

ANSWER:

The spice trade REFERS to the trade between HISTORICAL civilizations in ... Arab traders eventually took over conveying GOODS via the Levant and ... had, since the early 15th century, begun to EXPLORE northern Africa under Henry the Navigator.

Discussion

48.	An angel is 2/3 of of its complement. find the angels.
Answer» Step-by-step explanation: The complementary angle is x Complementary angles sum to a RIGHT angle (90 degrees). x + (2/3)x = 90 (3/3)x + (2/3)x = 90 (5/3)x = 90 x = 90(3/5) x = 54 degrees The angle is 2/3 of this The angle is (2/3)54 = 36 degrees

48.

An angel is 2/3 of of its complement. find the angels.

Answer»

Step-by-step explanation:

The complementary angle is x

Complementary angles sum to a RIGHT angle (90 degrees).

x + (2/3)x = 90

(3/3)x + (2/3)x = 90

(5/3)x = 90

x = 90(3/5)

x = 54 degrees

The angle is 2/3 of this

The angle is (2/3)54 = 36 degrees

Discussion

49.	If the lines drawn to the linear equations of the type a1 x c1 = 0 and a2 x +b2 y +c2 =0 are coincident on each other then the correct relation among the following is ?
Answer» Step-by-step explanation: In CASE of infinite many solutions ratio of the coefficients of the equations must be same. Thus for the equations too have infinite solutions taking the RATIOS we GET the conditiona =A2A 1 = b2b1 = c2c 1

49.

If the lines drawn to the linear equations of the type a1 x c1 = 0 and a2 x +b2 y +c2 =0 are coincident on each other then the correct relation among the following is ?

Answer»

Step-by-step explanation:

In CASE of infinite many solutions ratio of the coefficients of the equations must be same.

Thus for the equations too have infinite solutions taking the RATIOS we GET the conditiona

=A2A 1

= b2b1

= c2c 1

Discussion

50.	Does the inverse function of the following real valued function ofexist? Che reasonsMax
Answer» ANSWER: YES it exists Step-by-step explanation: Does the inverse function of the FOLLOWING REAL VALUED function of exist? Che reasons yes

50.

Does the inverse function of the following real valued function ofexist? Che reasonsMax

Answer»

ANSWER:

YES it exists

Step-by-step explanation:

Does the inverse function of the FOLLOWING REAL VALUED function of

exist? Che reasons yes

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