Question

What is tha value of (Cos - 67© - Sin - 23©) ?​

Answer 1

0

Explained -

$\cos(63) - \sin(90 - 27) \\ = \cos(63) - \cos(63) = 0$

Formula used - sin(90-x) = cosx

Also 90-27 = 63.

Hope this helps 1