332354 + Interview Questions in Secondary School in Math

1.	If a/b is the additive inverse of c/d then find the value of a/b + c/d.
Answer» Step-by-step EXPLANATION: a/b=-c/d a/b+c/d =-c/d+c/d =0 PLEASE MARK AS THE BRAINLIEST...

1.

If a/b is the additive inverse of c/d then find the value of a/b + c/d.

Answer»

Step-by-step EXPLANATION:

a/b=-c/d

a/b+c/d

=-c/d+c/d

=0

PLEASE MARK AS THE BRAINLIEST...

Discussion

2.	22 05ko Chhoti Se Chhoti ki sankhya se Bhag Diya Jaaye ki prapt
Answer» Answer: 5 table are DIVIDED by 2205

2.

22 05ko Chhoti Se Chhoti ki sankhya se Bhag Diya Jaaye ki prapt

Answer»

Answer:

5 table are DIVIDED by 2205

Discussion

3.	Arrange them to from the lowest possible number 0, 4, 5 ,3 .
Answer» Answer: 0,3,4,5 Step-by-step EXPLANATION: it is to be ARRANGED in ASCENDING ORDER

3.

Arrange them to from the lowest possible number 0, 4, 5 ,3 .

Answer»

Answer:

0,3,4,5

Step-by-step EXPLANATION:

it is to be ARRANGED in ASCENDING ORDER

Discussion

4.	The value of √20 ×√5 is ??
Answer» Answer: 10 Step-by-step EXPLANATION: $\sqrt{20}\sqrt{5}$ $=\sqrt{45}\sqrt{5}\\ =\sqrt{<klux>2</klux>25}\sqrt{5}\\ =2\sqrt{5}\sqrt{5}$ =25 =10

4.

The value of √20 ×√5 is ??

Answer»

Answer:

10

Step-by-step EXPLANATION:

$\sqrt{20}*\sqrt{5}$

$=\sqrt{4*5}*\sqrt{5}\\ =\sqrt{<klux>2</klux>*2*5}*\sqrt{5}\\ =2\sqrt{5}*\sqrt{5}$

=2*5

=10

Discussion

5.	2x4- 7x3- 13x2+63x-45
Answer» what to do...............?????

Discussion

6.	The cost of a Shop is Rs 2,35,465.the cost of a house is Rs 1,07, 475more than the shop. What is the costof the house ? What ú the totalCost of both the shop and thehouse.
Answer» Step-by-step EXPLANATION: the COST of a shop is 2,35,465 and " " " " HOUSE is 1,07,475 THEREFORE total cost of both the shop and the house is 3,42,940 follow me

6.

The cost of a Shop is Rs 2,35,465.the cost of a house is Rs 1,07, 475more than the shop. What is the costof the house ? What ú the totalCost of both the shop and thehouse.

Answer»

Step-by-step EXPLANATION:

the COST of a shop is 2,35,465 and

" " " " HOUSE is 1,07,475

THEREFORE

total cost of both the shop and the house is 3,42,940

follow me

Discussion

7.	What is the value of 4√28+3√7
Answer» ANSWER: √28 = 2√7 4(2√7) + 3√7 8√7 + 3√7 11√7 √7=2.64 11 x2.64 32.34

7.

What is the value of 4√28+3√7

Answer»

ANSWER:

√28 = 2√7

4(2√7) + 3√7

8√7 + 3√7

11√7

√7=2.64

11 x2.64

32.34

Discussion

8.	11305 is between 11000 and _______?
Answer» Answer: and 12000 Step-by-step EXPLANATION: PLEASE FOLLOW me if I CLEARED your DOUBT

8.

11305 is between 11000 and _______?

Answer»

Answer:

and 12000

Step-by-step EXPLANATION:

PLEASE FOLLOW me if I CLEARED your DOUBT

Discussion

9.	1-2-57-95-287 find wrong number
Answer» Answer: 1 is odd 2 is EVEN all are odd so even PLUS odd is even is wrong ANSS

9.

1-2-57-95-287 find wrong number

Answer»

Answer:

1 is odd 2 is EVEN all are odd so even PLUS odd is even is wrong ANSS

Discussion

10.	Three cubes each of volume 125cmsquare are joined end to end together . find las area of resulting cuboid?
Answer» Answer: if the volume is 125 each then SIDE of both cube are :-5cm then if we JOINED END to end together then the surface area of the cuboid will be (5a²+5a²)=(125+125)cm²=250cm²

10.

Three cubes each of volume 125cmsquare are joined end to end together . find las area of resulting cuboid?

Answer»

Answer:

if the volume is 125 each then

SIDE of both cube are :-5cm

then if we JOINED END to end together then the surface area of the cuboid will be

(5a²+5a²)=(125+125)cm²=250cm²

Discussion

11.	23-41÷11 Integers class 6th CBSE
Answer» Step-by-step explanation: 23-3.72=19.28 ANS HOGA

11.

23-41÷11 Integers class 6th CBSE

Answer»

Step-by-step explanation:

23-3.72=19.28 ANS HOGA

Discussion

12.	A plane travels 395, 000 meters in 9000 seconds what was its speed
Answer» ANSWER: Speed=distance/time So,395000/9000 =43.88

12.

A plane travels 395, 000 meters in 9000 seconds what was its speed

Answer»

ANSWER:

Speed=distance/time

So,395000/9000

=43.88

Discussion

13.	3+5+4=15,12,32 3+5+6=15,18,725+6+7=30,35,859+4+7=????????
Answer» Answer: 9+4+7=36,63,SORRY this number is UNKNOWN to me PLEASE MARK as branliest please please please follow me

13.

3+5+4=15,12,32 3+5+6=15,18,725+6+7=30,35,859+4+7=????????

Answer»

Answer:

9+4+7=36,63,SORRY this number is UNKNOWN to me

PLEASE MARK as branliest

please please please follow me

Discussion

14.	Test divisibility of the number 5335 by 9
Answer» ANSWER: no it is not divisible by 9 as 5+ 3+3 +5 = 16 16 is not divisible by 9 hence 5335 is also not divisible by 9 hope it helps✌

14.

Test divisibility of the number 5335 by 9

Answer»

ANSWER:

no it is not divisible by 9 as

5+ 3+3 +5 = 16

16 is not divisible by 9

hence 5335 is also not divisible by 9

hope it helps✌

Discussion

15.	तुम्ही गाडी चालवून मुंबईहुन पुण्याला जात आहात एकुण अंतर 175 कीमी आहे गाडीचा वेग 60KM/h आहे पेट्रोलचा भाव 68₹/लि आहे . गाडीत एकुण 4 माणस आहेत . प्रश्न असा आहे की चालकाची जन्मतारीख किती आहे ?
Answer» ANSWER: हुन पुण्याला जात आहात एकुण अंतर 175 कीमी आहे गाडीचा वेग 60KM/h आहे पेट्रोलचा भाव 68₹/लि आहे . गाडीत एकुण 4 माणस आहेत . प्रश्न असा आहे की चालकाची जन्मतारीख किती आहे ? Step-by-step EXPLANATION:

15.

तुम्ही गाडी चालवून मुंबईहुन पुण्याला जात आहात एकुण अंतर 175 कीमी आहे गाडीचा वेग 60KM/h आहे पेट्रोलचा भाव 68₹/लि आहे . गाडीत एकुण 4 माणस आहेत . प्रश्न असा आहे की चालकाची जन्मतारीख किती आहे ?

Answer»

ANSWER:

हुन पुण्याला जात आहात एकुण अंतर 175 कीमी आहे गाडीचा वेग 60KM/h आहे पेट्रोलचा भाव 68₹/लि आहे . गाडीत एकुण 4 माणस आहेत . प्रश्न असा आहे की चालकाची जन्मतारीख किती आहे ?

Step-by-step EXPLANATION:

Discussion

16.	25637 rounded to 1 significant number
Answer» Answer: 26000 Step-by-step EXPLANATION:

16.

25637 rounded to 1 significant number

Answer»

Answer:

26000

Step-by-step EXPLANATION:

Discussion

17.	B is the set of all months in a year having 3o days
Answer» Answer: B= [APRIL, JUNE, september, NOVEMBER] Step-by-step explanation: PLEASE mark me as brainliest

17.

B is the set of all months in a year having 3o days

Answer»

Answer:

B= [APRIL, JUNE, september, NOVEMBER]

Step-by-step explanation:

PLEASE mark me as brainliest

Discussion

18.	Find the addition of the following integers 21 and 24
Answer» ANSWER: 21+24=45 and its answer CAME

18.

Find the addition of the following integers 21 and 24

Answer»

ANSWER:

21+24=45 and its answer CAME

Discussion

19.	How many 2 digits whole number are there between 5and 92
Answer» Answer: 82 Step-by-step EXPLANATION: PLEASE MARK me as BRAINLIEST

19.

How many 2 digits whole number are there between 5and 92

Answer»

Answer:

82

Step-by-step EXPLANATION:

PLEASE MARK me as BRAINLIEST

Discussion

20.	Express -6/5 as a rational number with denominator -30
Answer» Step-by-step EXPLANATION: -6/5×6/6=-36/30 and its EXPRESSED

20.

Express -6/5 as a rational number with denominator -30

Answer»

Step-by-step EXPLANATION:

-6/5×6/6=-36/30 and its EXPRESSED

Discussion

21.	Rationalize 2 root 7 upon root 11
Answer» ANSWER: hope it HELPS, please MARK as brainliest

21.

Rationalize 2 root 7 upon root 11

Answer»

ANSWER:

hope it HELPS, please MARK as brainliest

Discussion

22.	There+were+1489+worker+in+a+factory+192+were+women+.+How+many+were+man+?
Answer» Answer: 1297 MEN Step-by-step explanation: Total no. of WORKERS in the factory = 1489 No. of women = 192 No. of men = 1489 - 192 = 1297 men

22.

There+were+1489+worker+in+a+factory+192+were+women+.+How+many+were+man+?

Answer»

Answer:

1297 MEN

Step-by-step explanation:

Total no. of WORKERS in the factory = 1489

No. of women = 192

No. of men = 1489 - 192 = 1297 men

Discussion

23.	X^2 -10 x + 9 = 0 by completing square method.
Answer» Question :- Find factors by completing the square method to x² - 10X + 9 = 0 Answer :- → 1 and 9 Explanation :- We have → x² - 10x + 9 = 0 Step (1) :- → Firstly divide whole Equation by coefficient of x² . ( this step has DONE ) Step (2) :- Firstly , replace of constant term to right side → x² - 10x = -9 Step (3) :- Now complete the Square by adding any constant term in both sides. → x² - 10x + (5)² - (5)² = -9 → x² + (5)² - 10x - 25 = -9 → x² + (5)² - 10x = -9 + 25 → x² + (5)² - 10x = 16 → (x - 5)² = 16 Case (1) :- → (x - 5) = 4 → x = 9 Case (2) :- → x - 5 = -4 → x = 1

23.

X^2 -10 x + 9 = 0 by completing square method.

Answer»

Question :-

Find factors by completing the square method to

x² - 10X + 9 = 0

Answer :-

→ 1 and 9

Explanation :-

We have

→ x² - 10x + 9 = 0

Step (1) :-

→ Firstly divide whole Equation by coefficient of x² . ( this step has DONE )

Step (2) :-

Firstly , replace of constant term to right side

→ x² - 10x = -9

Step (3) :-

Now complete the Square by adding any constant term in both sides.

→ x² - 10x + (5)² - (5)² = -9

→ x² + (5)² - 10x - 25 = -9

→ x² + (5)² - 10x = -9 + 25

→ x² + (5)² - 10x = 16

→ (x - 5)² = 16

Case (1) :-

→ (x - 5) = 4

→ x = 9

Case (2) :-

→ x - 5 = -4

→ x = 1

Discussion

24.	2x - 3 = square rool of 2x square - 2x + 21
Answer» ANSWER: Step-by-step EXPLANATION: do it yourself BRO!!!

24.

2x - 3 = square rool of 2x square - 2x + 21

Answer»

ANSWER:

Step-by-step EXPLANATION:

do it yourself BRO!!!

Discussion

25.	(_3)×(_3)×(_3)×........ 6 times
Answer» ANSWER: (_3)×(_3)×(_3)×(_3)×(_3)×(_3)=729. hope it's HELPFUL to you MARK it as BRAINLIEST...

25.

(_3)×(_3)×(_3)×........ 6 times

Answer»

ANSWER:

(_3)×(_3)×(_3)×(_3)×(_3)×(_3)=729.

hope it's HELPFUL to you MARK it as BRAINLIEST...

Discussion

26.	Find the greatest number of 4digit which is exactly divisible by ,12,18,30,40
Answer» your questions ANSWER is 9999 Might this WOULD help you to SOLVE the question.....

26.

Find the greatest number of 4digit which is exactly divisible by ,12,18,30,40

Answer»

your questions ANSWER is 9999

Might this WOULD help you to SOLVE the question.....

Discussion

27.	The length of rectangular field is increased by 50% and its breadth is decreased by 50% to form a new rectangular field . The decrease in area of new field is
Answer» 1+2+3++4+4+5++6+6+6++6+lol

Discussion

28.	You are a intelligent boy
Answer» ANSWER: SEE down Step-by-step EXPLANATION: I'am not a INTELLIGENT BOY

28.

You are a intelligent boy

Answer»

ANSWER:

SEE down

Step-by-step EXPLANATION:

I'am not a INTELLIGENT BOY

Discussion

29.	What mathematical symbols are missing 7373=24
Answer» I do not have SEEN such TYPE of QUESTION so SORRY.

Discussion

30.	Find 3 whole numbers whose product & sum are equal
Answer» Answer: 1,2 and 3 are those NUMBERS

30.

Find 3 whole numbers whose product & sum are equal

Answer»

Answer:

1,2 and 3 are those NUMBERS

Discussion

31.	Find a rational numbers between-(a) 3and 4
Answer» Answer: The third RATIONAL NUMBER between 4 and 27 can be calculated by finding the AVERAGE between them. iv) Similarly FOURTH rational number between 3 and 413 can be calculated by finding the average between them. V) Similarly, fifth rational number between 4 and 413 can be calculated by finding average between them

31.

Find a rational numbers between-(a) 3and 4

Answer»

Answer:

The third RATIONAL NUMBER between 4 and 27 can be calculated by finding the AVERAGE between them. iv) Similarly FOURTH rational number between 3 and 413 can be calculated by finding the average between them. V) Similarly, fifth rational number between 4 and 413 can be calculated by finding average between them

Discussion

32.	4. Find the smallest number of five digits that can be exactly divided by 60, 90 and 80
Answer» Answer: 10080 is the smallest NUMBER of FIVE digits that can be exactly DIVIDED by 60,90and 80. HOPE its help you

32.

4. Find the smallest number of five digits that can be exactly divided by 60, 90 and 80

Answer»

Answer:

10080 is the smallest NUMBER of FIVE digits that can be exactly DIVIDED by 60,90and 80.

HOPE its help you

Discussion

33.	FindB-A+33डि pleas give answers
Answer» Answer: HEY PLZ tell the question in a proper way the question is UNCLEAR

33.

FindB-A+33डि pleas give answers

Answer»

Answer:

HEY PLZ tell the question in a proper way

the question is UNCLEAR

Discussion

34.	(2 + 3x) (3 - 5x)find by inspection the coefficient of 'x' in this expansion. Please pls pls... answer questions fast dear friends.
Answer» ANSWER: the COEFFICIENT is 3AND 5

34.

(2 + 3x) (3 - 5x)find by inspection the coefficient of 'x' in this expansion. Please pls pls... answer questions fast dear friends.

Answer»

ANSWER:

the COEFFICIENT is 3AND 5

Discussion

35.	Find the value of k if the sum of the zeros of the polynomial of x square + kx + 10 is 12
Answer» sum of ZEROS = -( COEFFICIENT of x)/(coefficient of x^2) => 12 /1= -( coefficient of x)/(coefficient of x^2) => cefficient of x= -12 k = -12.. $..k= -12..mark brainliest$

35.

Find the value of k if the sum of the zeros of the polynomial of x square + kx + 10 is 12

Answer»

sum of ZEROS = -( COEFFICIENT of x)/(coefficient of x^2)

=> 12 /1= -( coefficient of x)/(coefficient of x^2)

=> cefficient of x= -12

k = -12..

$..k= -12..mark brainliest$

Discussion

36.	Subtracting 7 x + Y from - X + Y gives
Answer» ANSWER: Answer: - X + y - (7X + y) - x + y - 7x - y - 8x Hope it HELPS you.

36.

Subtracting 7 x + Y from - X + Y gives

Answer»

ANSWER:

Answer:

- X + y - (7X + y)

- x + y - 7x - y

- 8x

Hope it HELPS you.

Discussion

37.	Express 0.475 Express 0.475 from p q where p and q are integers and q is not equal to 0
Answer» Step-by-step explanation: we can WRITE 0.475 as 475/1000 as there are 3 DIGITS after deciam so we DIVIDE it by 1000 on simplifying 475/1000= 19/40

37.

Express 0.475 Express 0.475 from p q where p and q are integers and q is not equal to 0

Answer»

Step-by-step explanation:

we can WRITE 0.475 as 475/1000 as there are 3 DIGITS after deciam so we DIVIDE it by 1000

on simplifying 475/1000= 19/40

Discussion

38.	3and 5/6 by the recipocal 14/5
Answer» ANSWER: here is UR answer Step-by-step EXPLANATION: _______________________________________

38.

3and 5/6 by the recipocal 14/5

Answer»

ANSWER:

here is UR answer

Step-by-step EXPLANATION:

_______________________________________

Discussion

39.	Find dy/dx, y = x+1/(x+2)^2Please help me to solve this
Answer» ANSWER: HOPE it HELPS you.....

39.

Find dy/dx, y = x+1/(x+2)^2Please help me to solve this

Answer»

ANSWER:

HOPE it HELPS you.....

Discussion

40.	You eat 8 strawberries and your friend eats 12 strawberries from a bowl. There are 20 strawberries left. Which equation and solution give the original number of strawberries?
Answer» ANSWER: I NEED brainliest answer ❤️ There are 40 STRAWBERRIES PLEASE MARK BRAINLIEST ANSWER ❤️

40.

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. There are 20 strawberries left. Which equation and solution give the original number of strawberries?

Answer»

ANSWER:

I NEED brainliest answer ❤️

There are 40 STRAWBERRIES

PLEASE MARK BRAINLIEST ANSWER ❤️

Discussion

41.	What is 1/3(n+6) = -10
Answer» ANSWER: $\frac{1}{3} (n + 6) = \: - 10 \\ \frac{n + 6}{3} = - 10 \\ n + 1 = - 10 \\ n = - 10 - 1 \\ n = - 11$

41.

What is 1/3(n+6) = -10

Answer»

ANSWER:

$\frac{1}{3} (n + 6) = \: - 10 \\ \frac{n + 6}{3} = - 10 \\ n + 1 = - 10 \\ n = - 10 - 1 \\ n = - 11$

Discussion

42.	{-98+60}÷{29÷9}=........evalute the following
Answer» ANSWER: -11.875 Step-by-step EXPLANATION: (-98+60)÷(29÷9) (-38)÷(3.2) -11.875 ANS

42.

{-98+60}÷{29÷9}=........evalute the following

Answer»

ANSWER:

-11.875

Step-by-step EXPLANATION:

(-98+60)÷(29÷9)

(-38)÷(3.2)

-11.875 ANS

Discussion

43.	Find the missing term
Answer» 432=24 , 24+8=32 531=15 , 15+9=24 294=72 , 72+12={84}

43.

Find the missing term

Answer»

4*3*2=24 , 24+8=32

5*3*1=15 , 15+9=24

2*9*4=72 , 72+12={84}

Discussion

44.	Evaluate the expression {10\times7}+(10 - 6)
Answer» Step-by-step explanation: 10^7+10-6 =10000000+4 =10000004

44.

Evaluate the expression {10\times7}+(10 - 6)

Answer»

Step-by-step explanation:

10^7+10-6

=10000000+4

=10000004

Discussion

45.	One of two poles is triple to the other. These two poles are at both sides of 180mwidth road. If top of small and tall poles are seen with angles of elevation 60° and 30°from a point on the road. Then find the distances of each pole from that point.
Answer» hope it helps u.. PLEASE MARK it as BRAINLIEST ANSWER and Don't forget to FOLLOW me..

45.

One of two poles is triple to the other. These two poles are at both sides of 180mwidth road. If top of small and tall poles are seen with angles of elevation 60° and 30°from a point on the road. Then find the distances of each pole from that point.

Answer»

hope it helps u..

PLEASE MARK it as BRAINLIEST ANSWER and Don't forget to FOLLOW me..

Discussion

46.	modern weights 177 kg and Rohan weights 105 kg what is the difference of their weight is the weight of each is rounded off to the nearest 100
Answer» Answer: 177-105=72 difference in their weight is 72 Step-by-step EXPLANATION: round off 177 is 200 round off 105 is 100

46.

modern weights 177 kg and Rohan weights 105 kg what is the difference of their weight is the weight of each is rounded off to the nearest 100

Answer»

Answer:

177-105=72

difference in their weight is 72

Step-by-step EXPLANATION:

round off 177 is 200

round off 105 is 100

Discussion

47.	A TV was purchased for Rs. 54000. Its price was marked up by 40%.It was sold at a discount of 20% on the marked price. What was the profit percent of the cost price? A. 10% B. 11% C. 15% D. 12%
Answer» Answer: The correct answer is 12% Step-by-step EXPLANATION: As if the cost PRICE of the TV i.e 54000 will be increased by 40% it will become 75600 and a discount of 20% was GIVE so it's selling price will be 60480 and if subtract Cost price from selling price we will get a difference of 6480 that is the profit which is 12% of the cost price HOPE it will help you!

47.

A TV was purchased for Rs. 54000. Its price was marked up by 40%.It was sold at a discount of 20% on the marked price. What was the profit percent of the cost price? A. 10% B. 11% C. 15% D. 12%

Answer»

Answer:

The correct answer is 12%

Step-by-step EXPLANATION:

As if the cost PRICE of the TV i.e 54000 will be increased by 40% it will become 75600 and a discount of 20% was GIVE so it's selling price will be 60480 and if subtract Cost price from selling price we will get a difference of 6480 that is the profit which is 12% of the cost price

HOPE it will help you!

Discussion

48.	Tan(60°-A) = √3cosA -sinA÷cosA +√3sinA
Answer» Correct QUESTION: Prove that $\bf{tan(60^{\circ}-A)=\dfrac{\sqrt{3}cosA-sinA}{cosA+\sqrt{3}sinA}}$ . To Prove: $\longrightarrow\sf{tan(60^{\circ}-A)=\dfrac{\sqrt{3}cosA-sinA}{cosA+\sqrt{3}sinA}}$ SOLUTION: We KNOW that, $\longrightarrow\sf{tan(A-B)=\dfrac{tanA-tanB}{1+tanAtanB}}$ $\longrightarrow\sf{tan(A)=\dfrac{sinA}{cosA}}$ $\longrightarrow\sf{tan60^{\circ}=\sqrt{3}}$ Now, $\sf{L.H.S.=tan(60^{\circ}-A)}$ $\sf{L.H.S.=\dfrac{tan60^{\circ}-tanA}{1+tan60^{\circ}tanA}}$ $\sf{L.H.S.=\dfrac{\sqrt{3}-\dfrac{sinA}{cosA}}{1+\dfrac{\sqrt{3}sinA}{cosA}}}$ $\sf{L.H.S.=\dfrac{\dfrac{\sqrt{3}cosA-sinA}{\cancel{cosA}}}{\dfrac{cosA+\sqrt{3}sinA}{\cancel{cosA}}}}$ $\sf{L.H.S.=\dfrac{\sqrt{3}cosA-sinA}{cosA+\sqrt{3}sinA}}$ $\sf{L.H.S.=R.H.S.}$ Hence Proved Few more Identities: $\rightarrow\bf{sin(A+B)=sinAcosB+cosAsinB}$ $\rightarrow\bf{sin(A-B)=sinAcosB-cosAsinB}$ $\rightarrow\bf{cos(A+B)=cosAcosB-sinAsinB}$ $\rightarrow\bf{cos(A-B)=cosAcosB+sinAsinB}$ $\rightarrow\bf{tan(A+B)=\dfrac{tanA+tanB}{1-tanAtanB}}$

48.

Tan(60°-A) = √3cosA -sinA÷cosA +√3sinA

Answer»

Correct QUESTION:

Prove that $\bf{tan(60^{\circ}-A)=\dfrac{\sqrt{3}cosA-sinA}{cosA+\sqrt{3}sinA}}$ .

To Prove:

$\longrightarrow\sf{tan(60^{\circ}-A)=\dfrac{\sqrt{3}cosA-sinA}{cosA+\sqrt{3}sinA}}$

SOLUTION:

We KNOW that,

$\longrightarrow\sf{tan(A-B)=\dfrac{tanA-tanB}{1+tanAtanB}}$

$\longrightarrow\sf{tan(A)=\dfrac{sinA}{cosA}}$

$\longrightarrow\sf{tan60^{\circ}=\sqrt{3}}$

Now,

$\sf{L.H.S.=tan(60^{\circ}-A)}$

$\sf{L.H.S.=\dfrac{tan60^{\circ}-tanA}{1+tan60^{\circ}tanA}}$

$\sf{L.H.S.=\dfrac{\sqrt{3}-\dfrac{sinA}{cosA}}{1+\dfrac{\sqrt{3}sinA}{cosA}}}$

$\sf{L.H.S.=\dfrac{\dfrac{\sqrt{3}cosA-sinA}{\cancel{cosA}}}{\dfrac{cosA+\sqrt{3}sinA}{\cancel{cosA}}}}$

$\sf{L.H.S.=\dfrac{\sqrt{3}cosA-sinA}{cosA+\sqrt{3}sinA}}$

$\sf{L.H.S.=R.H.S.}$

Hence Proved

Few more Identities:

$\rightarrow\bf{sin(A+B)=sinAcosB+cosAsinB}$

$\rightarrow\bf{sin(A-B)=sinAcosB-cosAsinB}$

$\rightarrow\bf{cos(A+B)=cosAcosB-sinAsinB}$

$\rightarrow\bf{cos(A-B)=cosAcosB+sinAsinB}$

$\rightarrow\bf{tan(A+B)=\dfrac{tanA+tanB}{1-tanAtanB}}$

Discussion

49.	What is the prbibilty of getting a number less than 5 and a head
Answer» Actually do you want to find the probability for coin or a die... If you want to find the probability for a die then, Sample Space:S={1,2,3,4,5,6} n(S)=6 Let A be the event of getting a number LESS than 5 A={1,2,3,4} n(A)=4 $P(A)\: =\: \frac{n(A)}{n(S)} \\ P(A)\: =\: \frac{4}{6}$ HOPE THIS HELPS YOU.. IF YOU FIND THIS HELPFUL MARK IT AS BRAINLIEST..

49.

What is the prbibilty of getting a number less than 5 and a head

Answer»

Actually do you want to find the probability for coin or a die...

If you want to find the probability for a die then,

Sample Space:S={1,2,3,4,5,6}

n(S)=6

Let A be the event of getting a number LESS than 5

A={1,2,3,4}

n(A)=4

$P(A)\: =\: \frac{n(A)}{n(S)} \\ P(A)\: =\: \frac{4}{6}$

HOPE THIS HELPS YOU..

IF YOU FIND THIS HELPFUL MARK IT AS BRAINLIEST..

Discussion

50.	Dildar Singh2x-3/3x+2=-2/3
Answer» ANSWER: $hey \: mate \: here \: is \: your \: answer... \\ \frac{2x - 3}{3x + 2 } = - \frac{ 2}{3} \\ 3(2x - 3) = - 2(3x + 2) \\ 6x - 9 = - 6x - 4 \\ 6x + 6x = - 4 + 9 \\12x = 5$ HOPE its HELP you..

50.

Dildar Singh2x-3/3x+2=-2/3

Answer»

ANSWER:

$hey \: mate \: here \: is \: your \: answer... \\ \frac{2x - 3}{3x + 2 } = - \frac{ 2}{3} \\ 3(2x - 3) = - 2(3x + 2) \\ 6x - 9 = - 6x - 4 \\ 6x + 6x = - 4 + 9 \\12x = 5$

HOPE its HELP you..

Discussion

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