If sintheta+sin^(2)theta+sin^(3)theta=1,...

If `sintheta+sin^(2)theta+sin^(3)theta=1`, then find the value of `cos^(6)theta-4cos^(4)theta+8cos^(2)theta`.

A

4

B

2

C

1

D

none

Verified by Experts

The correct Answer is:

A

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