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If tan^(-1)(sin^(2)theta-2sintheta+3)+co...

If `tan^(-1)(sin^(2)theta-2sintheta+3)+cot^(-1)(5^(sec^(2)beta)+1)=pi/2`, then the value of `cos^(2)theta-sintheta` is

A

0

B

`-1`

C

`1`

D

`2`

Text Solution

Verified by Experts

The correct Answer is:
C
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