Question

cos60°.cis30°+sin60°.sin30°​

Answer 1

Answer:

Step-by-step explanation:

We know that

cos 60= 1/2

cos 30= √3/2

sin 60= √3/2

sin 30=1/2

Substituting all the values in the given equation we get

1/2 + √3/2 + √3/2 + 1/2

= √3/4 + √3/4

= 2√3/4

= √3/2

Answer

cos 60∘× cos 30∘+sin 60∘× sin30∘= √3/2