Question

Prove that:
cos 37° cos 53° -sin 37° sin 53° = 0.​

Answer 1

Answer:

Cos37°cos53°-sin37°sin53°=cos(90°-53°)cos(90°-37°)-sin37°sin53°=sin53°sin37°-sin37°sin53°=0

Answer 2

It is telling incorrect meeting password...