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The value of tan^(-1)((xcostheta)/(1-xsi...

The value of `tan^(-1)((xcostheta)/(1-xsintheta))-cot^(-1)((costheta)/(x-sintheta))` is

A

`2theta`

B

`theta`

C

`theta//2`

D

independent of `theta`

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The correct Answer is:
B
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