If cosectheta+cosec^(2)theta=1 , then ...

If `cosectheta+cosec^(2)theta=1` , then what is the value of `(cot^(12)theta-3cot^(10)theta+3cot^(8)theta-cot^(6)theta)`?

A

`-2`

B

`-1`

C

0

D

1

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The correct Answer is:

D

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