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Questions  

tancot1x is equal to 

a
π2−x
b
cot⁡tan−1⁡x
c
tan⁡x
d
none of these

detailed solution

Correct option is B

We have,tan⁡cot−1⁡x=tan⁡π2−tan−1⁡x=cot⁡tan−1⁡x

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