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If tantheta+cottheta=2, then the value o...

If `tantheta+cottheta=2`, then the value of `tan^(n)theta+cot^(n)theta` (`0^(@)lt theta lt90^(@),n` is an integer) is

A

`2^(n)`

B

`2^((n)/(2))`

C

`2^((1)/(2))`

D

2

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The correct Answer is:
D
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