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int(0)^(pi//8) cos^(3)4 theta d theta=...

`int_(0)^(pi//8) cos^(3)4 theta d theta=`

A

`2//3`

B

`1//4`

C

`1//3`

D

`1//6 `

Text Solution

Verified by Experts

The correct Answer is:
D
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