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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 4051. |
(cosl+cosb)2+ (sinl+sinb)2=4cos2l-b/2 |
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| 4052. |
If π/2 |
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| 4053. |
Supplementary part of trigonometry |
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| 4054. |
3x+5y=34 |
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| 4055. |
Which app is better for iit-jee preperation |
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Answer» JEE mains or advanced Self app is best and better app |
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| 4056. |
What is set and empty set |
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Answer» U can say thnks ryt???????????????? Set is collection of distinct objects............Empty set is a set where no elements present in it......???? |
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| 4057. |
What are real functions & real valued functions???& wat are some common examples |
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| 4058. |
Koi h kya mujhe help chahiye guys |
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Answer» Hmm ok tell in which subject you want help |
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| 4059. |
SinA/sinc=sin(a-b)/sin(b-c), prove that a square B square c square are in AP |
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| 4060. |
prove that cos(90+x)×sec(-x)×tan(180-x)÷sec(360-x)×sin(360+x)×cot(90-x) |
| Answer» -1 | |
| 4061. |
If A={1,2,3} B={3,4} C={4,5,6}Find (A×B)U(A×C) |
| Answer» Look,(A×B)={(1,3)(1,4)(2,3)(2,4)(3,3)(3,4)}(A×c)={(1,4)(1,5)(1,6)(2,4)(2,5)(2,6)(3,4)(3,5)(3,6)}Now,(A×B)U (A×C)={(1,3)(1,4)(1,5)(1,6)(2,3)(2,4)(2,5)(2,6)(3,3)(3,4)(3,5)(3,6)}HOPE YOU WILL UNDERSTAND....... | |
| 4062. |
Cot2thita kya hota hi |
| Answer» It\'s a trigonometric ratio or you can say trigonometric functions to calculate the sides of the triangle | |
| 4063. |
find the value of (-√-1)4n |
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| 4064. |
Check:-P(A) U P(B) = P(AUB) |
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| 4065. |
Cos theeta + sin theeta =root2cos theeta then p.t -cos theeta -sin theeta = √2 sin theeta |
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| 4066. |
Find √3cosec20 -sec20 |
| Answer» Change it into sin and cos then put the formula of sin2x and cos2x | |
| 4067. |
X belong to A(123)A belong to B(234)Show that X belong to B |
| Answer» The question is wrong because A does not belong in B | |
| 4068. |
If tan theeta +sin theeta |
| Answer» | |
| 4069. |
What is a set bilder form |
| Answer» The method of symbolic representation of the set by using the common property of the elements is called set builder form . | |
| 4070. |
State and prove d\'morgans law |
| Answer» You can get in ncrt book | |
| 4071. |
Common roots |
| Answer» | |
| 4072. |
Whta is singleton set |
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Answer» A set that contains only one element is called a singleton set The set which contain only one element is called a singleton set. For example A is a set which contain only one element that is {r} such that A:{r} |
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| 4073. |
Xsqaure+1/xsquare=8, find x4+1/x4=? |
| Answer» x2+1/x2 = 8 then x4+1/x4=? on squaring both side(x2+1/x2)2 = 82x4+1/x4+2 = 64x4+1/x4 = 64-2 = 62 | |
| 4074. |
Is. - cosx=cosx |
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Answer» It is confusing for me.Why because,Sin(-x)= -sinx.Cos(-x)= cosx.But my math sir said .-Cosx is not equal to cosx.I want some clarification. Yes because -cosx=cos(360-x)=cos x as it will lie in 4th quadrant and in 4th quadrant the value of cos is positive |
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| 4075. |
X-4y=-2 |
| Answer» X is 6Y is 2 | |
| 4076. |
What is the defination of natural number |
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Answer» Natural numbers are the ones which begin from 1 ( not including 0) and continuing up to infinity. Ordinary counting numbers are called natural number A counting no are called natural no A numbers start with 1 called natural number. |
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| 4077. |
WHEATHER AREA IS A VECTOR OR SCALAR QUANTITY ? |
| Answer» Scalar | |
| 4078. |
K c sinha or R S agarwal for maths???? |
| Answer» RS Aggrawal | |
| 4079. |
226278×7272829 |
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| 4080. |
From where to prepare for maths olympiad |
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Answer» Also from kota Shiekar |
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| 4081. |
How much marka i required to get commerce with maths Cbsce |
| Answer» U have to score good in mathematics and social science | |
| 4082. |
Type of angles |
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Answer» HH In geometry, there are three types of angles:\tacute angle-an angle between 0 and 90 degrees\tright angle-an 90 degree angle\tobtuse angle-an angle between 90 and 180 degrees\tstraight angle-a 180 degree angle |
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| 4083. |
Prove that- √2+√2+√2+2cos8theta=2cos theta |
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Answer» Listen i will represent theta by ¢and...... you must know that (cos2¢=2cos^2¢-1),,,,,Solving LHS...,√2+√2+√2+2cos8¢......,√2+√2+√2(1+cos8¢).....,√2+√2+√2(2cos^2 4¢).....by applying identity....,√2+√2+2cos4¢.......,√2+√2(1+cos4¢)......,√2+√2(2cos^2 2¢).....,√2+2cos 2¢.......,√2(1+cos 2¢)......,√2(2cos^2 ¢).....,2cos¢......=RHS...,,,,,,,HENCE PROVED.. Could u send ans of ths que |
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| 4084. |
tan A+ sec A - 1/ tan A - sec A + 1= 1+sinA/ cos A. |
| Answer» Using identity sec^2A-tan^2A=1 we gettanA+secA-(sec^2A-tan^2A)÷tanA-secA+1 So tanA + sec A -(secA+tanA)(secA-tanA)÷tanA-secA+1=( tan A + secA)(1-secA+tanA)÷tanA -sec A +1On cancelling the terms we get tan A + sec A = sinA/cos A +1/cosA= sinA+1/cosA | |
| 4085. |
1+sin2x - cos2x/1+sin2x + cos2x= tanx |
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Answer» cos^2x+sin^2x +sin2x- (cos^2x-sin^2x)÷ cos^2x+sin^2x+sin2x +cos^2x-sin^2xUsing identity cos^2x+sin^2x=1 and cos2x=cos^2x-sin^2x.On simplifying we get 2sin^2x +sin2x÷2cos^2x+sin2x= 2sinx(sinx+cosx)÷2cosx(cosx+sinx)=sinx/cosx = tanx 0 |
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| 4086. |
Secx-tanx/secx+tanx=1-2secxtanx+2tan^2x |
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| 4087. |
1/ sinA - tanA = secA + tanA |
| Answer» Hiiiì | |
| 4088. |
Integration of sin3xcos2x |
| Answer» | |
| 4089. |
Solve : x^2+92y^2=1 |
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Answer» How? Can you solve this?? x=1 and y=0 |
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| 4090. |
Some much number form lesson |
| Answer» | |
| 4091. |
Solve 2^m - 2^n = 56 for m and n. |
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Answer» To finite sets have m and n elements. The taotal number of subsets of first sets is 56 more than the total number of subsets of second set. What should be the value of m and n? Ye kon se chapter ka question h |
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| 4092. |
Exemplar solutions |
| Answer» | |
| 4093. |
Solve for x and y : x2+4ix-4=0 |
| Answer» -b-+√b2-4ac/2a=_4i+-√(-4)2-4(1)(-4)/2-4i+-√-4+4/2-4i+-√-4+4/2-4i/2-2i | |
| 4094. |
Solve for x anf y :ix2-2x+i=0 |
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Answer» Where is y ??????Wrong question ? Please send the answer |
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| 4095. |
(AUB\'UC\')=? |
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| 4096. |
Guys kya cbse guide app laptop mein use kr skte h kya ya |
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Answer» Yes u can use but u have to install first bluestack or youwave to use andriod application in ur pc or laptop. Yes we can Plz reply |
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| 4097. |
T is a point in the exterior of ∆PQR. Show that PQ+QR+PR |
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| 4098. |
Find the range of the following f(x)=3/2-x^2 ;xis not equal to 2 |
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| 4099. |
Exercise 3.3 question 22 |
| Answer» Cbse app me solutions h | |
| 4100. |
(A-B) union B equal to null set |
| Answer» Yes | |