If sinx +sin^(2)x=1 then the value of ...

If `sinx +sin^(2)x=1` then the value of `cos^(12)x+3cos^(10)x+3cos^(8)x+cos^(6)x-2` is equal to

A

A) 0

B

B) 1

C

C) `-1`

D

D) 2

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The correct Answer is:

C

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