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

If ` sin x + sin^(2) x + sin^(3) x = 1 ` , then prove that `cos^(6)x - 4 cos^(4) x + 8 cos^(2) x - 4 = 0 ` .

A

2

B

1

C

3

D

4

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The correct Answer is:

D

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