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Find the value of cos^(2)""(pi)/(8)+cos^...

Find the value of `cos^(2)""(pi)/(8)+cos^(2)""(3pi)/(8)+cos^(2)""(5pi)/(8)+cos^(2)""(7pi)/(8)`

Text Solution

Verified by Experts

The correct Answer is:
`=1+1=2`
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