Question

cos 60 × cos 30
°+ sin 60
° × sin 30
°​

Answer 1

Answer:

Hi,

Cos60° = 1/2

Sin60° = ✓3/2

Cos30° = ✓3/2

And,

Sin30° = 1/2

Therefore,

Cos 60° × Cos30 - Sin60° × Sin30°

=> 1/2 × ✓3/2 - ✓3/2 × 1/2

=> ✓3/4 - ✓3/4

=> ✓3-✓3/4

=> 0/4

=> 0

Answer 2

Answer:

cos60°×cos30°+sin60°×sin30°

1/2×√3/2-√3/2×1/2

0

Step-by-step explanation:

I hope it is helpful