Home
Class 12
MATHS
IF cos ( alpha + beta ) =0 then si...

IF ` cos ( alpha + beta ) =0` then ` sin ( alpha + 2 beta ) ` is equal to

A

`sin beta `

B

`sin alpha`

C

`cos beta `

D

`cos alpha `

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRIC FUNCTIONS

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|134 Videos

  • TRIGONOMETRIC FUNCTIONS

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|134 Videos

  • THREE DIMENSIONAL GEOMETRY

    NEW JOYTHI PUBLICATION|Exercise Objective|36 Videos

  • VECTOR ALGEBRA

    NEW JOYTHI PUBLICATION|Exercise CONTINUOUS EVALUATION|2 Videos

Similar Questions

Explore conceptually related problems

IF cot ( alpha + beta ) =0 then sin ( alpha + 2 beta ) is equal to

If cos alpha + cos beta =0 = sin alpha + sin beta , then cos 2 alpha + cos 2 beta is equal to

If sin^(4)alpha+cos^(4)beta+2=4 sin alpha cos beta, 0 le alpha, (pi)/(2) , then (sin alpha+cos beta) is equal to

If cos alpha + cos beta = 1//2 and sin alpha+ sin beta = 1//3 , then

if alpha , beta are two distinct solutions of a sin theta + b cos theta =c than tan ( alpha + beta)/(2) is equal to

If x^(2)+px+q=0 has the roots alpha" and "beta , then the value of (alpha-beta)^(2) is equal to

If tan alpha and tan beta are the roots of x^(2) + ax + b = 0, then (sin (alpha + beta))/(sin alpha sin beta) is equal to

If tan alpha and tan beta are the roots of x^2 + ax + b = 0 , where a ne 0 then sin (alpha + beta) sec alpha sec beta is equal to ……………….

If alpha , beta in (0,pi/2), sin alpha =4/5 and cos ( alpha + beta) = ( -12)/(13) then sin beta is equal to

Let A and B denote the statements A : cos alpha + cos beta + cos gamma =0 B : sin alpha + siin beta + sin gamma = 0 If cos(beta - gamma) + cos (gamma -alpha) + cos (alpha -beta) = - (3)/(2) , then