The value of cos^(2)45^(@)-sin^(2)15^(@)...

The value of `cos^(2)45^(@)-sin^(2)15^(@)` is

A

`sqrt3/2`

B

`sqrt3/4`

C

`(sqrt3+1)/(2sqrt2)`

D

`(sqrt3-1)/(2sqrt2)`

Verified by Experts

The correct Answer is:

C

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