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If 0 lt theta lt pi//8, then sqrt(2+sqrt...

If `0 lt theta lt pi//8`, then `sqrt(2+sqrt(2+2cos(4theta)))` is equal to:

A

`2 cos theta`

B

`-2cos theta`

C

`2 sin theta `

D

`-2sin theta`

Text Solution

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The correct Answer is:
a
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