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

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

A

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

B

`sqrt(3)/(4)`

C

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

D

`sqrt(3)/(2)`

Text Solution

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The correct Answer is:
B
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