IIT-JEE
Exam
prove:
sin(A – B) = sinA cosB – cosA sinB
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IIT-JEE Other Question
If sin A =
3
5
and cos B =
9
41
, 0 < A <
π
2
.
0 < B <
π
2
, find the values of the following -
(a) sin (A + B)
(b) cos (A – B)
Prove:
cos (A + B) = cos A cos B – sin A sin B