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Find the value of tan^-1(1/2tan2A)+tan^-...

Find the value of `tan^-1(1/2tan2A)+tan^-1(cotA)+tan^-1(cot^3A)`

A

`(pi)/(4)`

B

`pi`

C

0

D

`(pi)/(2)`

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The correct Answer is:
B
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