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If 0 le A le (pi)/(4), then tan^(-1) ((1...

If `0 le A le (pi)/(4)`, then `tan^(-1) ((1)/(2) tan 2A) + tan^(-1) (cot A) + tan^(-1) (cot^(3)A)` is equal to

A

`(pi)/(4)`

B

`pi`

C

0

D

`(pi)/(2)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2018-MULTIPLE CHOICE QUESTIONS
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