Question

Is it right to say cos(60+30)=cos60.cos30-sin60.sin30​

Answer 1

Step-by-step explanation:

yes because

cos(x+y) = cos(x) cos(y) - sin(x)sin(y)

HOPE IT HELPS SO PLEASE MARK ME BRAINLIEST AND FOLLOW ME

Answer 2

Answer:

=> Yes.

Step-by-step explanation:

$\cos(x + y) = \cos(x) . \cos(y) - \sin(x) . \sin(y)$