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cos^2 4 5^(@)-sin^2 1 5^(@)=...

`cos^2 4 5^(@)-sin^2 1 5^(@)=`

A

`(sqrt3)/(2)`

B

`(sqrt3)/(4)`

C

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

D

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

Text Solution

Verified by Experts

The correct Answer is:
B
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