Question

COS 60ºX COS 30°+ sin 60 x sio 30​

Answer 1

Answer:

cos 60° = 1/2

cos 30° = √3/2

sin 60° = √3/2

sin 30° = 1/2

So let's put the given values.

cos60*cos30 + sin 60* sin 30= 1/2 ×√3/2 + √3/2×1/2

= √3/4 + √3/4 = 2√3/4 = √3/2

Hope it will help u...