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Cos^(2)(pi/4-theta/2)-sin^(2)(pi/4-theta...

`Cos^(2)(pi/4-theta/2)-sin^(2)(pi/4-theta/2)=`

A

`costheta`

B

`sintheta`

C

`"cos"theta/2`

D

`"sin"theta/2`

Text Solution

Verified by Experts

The correct Answer is:
B
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