Question

Value of sin Φ cos 90-Φ+cos Φ sin (90-Φ)is

Answer 1

1
 sin theta.sin theta+cos theta.cos theta=1(sin^2 theta+cos^2 theta=1)

Answer 2

I will say wait.....

Cos 90-tita=sin tita

Sin 90-tita=cos tita

Sin tita X sin tita + cos tita X cos tita =

Sin^2tita + cos^2tita = 1