cos 66^(@) + sin 84^(@) =...

cos `66^(@) + sin 84^(@)` =

A

`(1)/(4) ( sqrt(3) + sqrt(5))`

B

`(1)/(4) sqrt(5) (sqrt(3) + 1)`

C

`(1)/(4) (sqrt(3) + 1)(sqrt(5) + 1)`

D

`(1)/(4) sqrt(3) (sqrt(5) + 1)`

Verified by Experts

The correct Answer is:

D

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