Question

The value of cos 60° cos 30° - sin 30° sin 60°

Answer 1

Answer to this question

Answer 2

Step-by-step explanation:

we know that cos60= 1/2

and cos30= √3/2

sin 30 =1/2 and sin 60= √3/2

so 1/2×√3/2- 1/2×√3/2

= √3/4-√3/4 = 0