The value of cos^(2)((3pi)/(5))+cos^(2)(...

The value of `cos^(2)((3pi)/(5))+cos^(2)((4pi)/(5))` is equal to

A

`3//4`

B

`5//4`

C

`5//2`

D

`4//5`

Text Solution

Verified by Experts

The correct Answer is:

a

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