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Find the value of:(1+cos""(pi)/(8))(1+co...

Find the value of:`(1+cos""(pi)/(8))(1+cos""(3pi)/(8))(1+cos""(5pi)/(8))(1+cos""(7pi)/(8))=?`

A

`(1)/( 2)`

B

`cos "" ( pi )/( 8 )`

C

`(1)/( 8 )`

D

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

Text Solution

Verified by Experts

The correct Answer is:
C
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