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If cot^(-1)x=(2pi)/(5)"for some"x""inR,"...

If `cot^(-1)x=(2pi)/(5)"for some"x""inR,"the value of"tan^(-1)x` is

A

`(-pi)/(10)`

B

`(pi)/(5)`

C

`(pi)/(10)`

D

`(-pi)/(5)`

Text Solution

Verified by Experts

The correct Answer is:
C
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