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If cos^(6)alpha+sin^(6)alpha+ksin^(2)2a...

If `cos^(6)alpha+sin^(6)alpha+ksin^(2)2alpha=1AA alpha in(0,pi//2)` , then k is

A

`3//4`

B

`1//4`

C

`1//3`

D

`1//8`

Text Solution

Verified by Experts

The correct Answer is:
A
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