Question

(Sin 30+ (os 30)-
(sin 60+ cos 60)​

Answer 1

Answer:

The answer is 1

Step-by-step explanation:

Ues sin (90°-0) =cos0 and cos (90°-0)= sin 0and cos2 0 + sin2 0 =1

Now,

sin 30°. cos 60° + cos 30° .sin 60°

=sin(90°-60°). cos 60°+ cos (90°-60°) .sin 60°

=cos 60° .cos 60°+ sin 60° .sin 60°

= cos2 60°+sin2 60° =1