If "cos" x +"cos"^2 x -1, then the valu...

If `"cos" x +"cos"^2 x -1, ` then the value of `"sin"^12 x+3 "sin"^8x+"sin" ^6x-1` is

A

2

B

1

C

-1

D

0

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The correct Answer is:

D

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