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If cos x + cos^(2) x =1 , then the valu...

If `cos x + cos^(2) x =1 `, then the value of `sin^(4) x + sin^(6) x` is

A

`-1 + sqrt5`

B

`(-1 - sqrt5)/( 2)`

C

`(1-sqrt5)/(2)`

D

`(-1+sqrt5)/(2)`

Text Solution

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The correct Answer is:
D
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