cos^(4) ""(pi)/(12) - sin^(4)"" (pi)/(1...

`cos^(4) ""(pi)/(12) - sin^(4)"" (pi)/(12)` is equal to

A

`(1)/(2)`

B

`(sqrt(3))/(2)`

C

`(sqrt(3)+1)/(2)`

D

`(sqrt(3)+1)/(2)`

Verified by Experts

The correct Answer is:

B

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