The value of cos^(2)48^(@)-sin^(2)12^(@)...

The value of `cos^(2)48^(@)-sin^(2)12^(@)` is

A

`(sqrt5+1)/(8)`

B

`(sqrt5-1)/(8)`

C

`(sqrt5+1)/(5)`

D

`(sqrt5+1)/(2 sqrt2)`

Verified by Experts

The correct Answer is:

A

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