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If u=cot^-1 sqrt(tanalpha)-tan^-1 sqrt(t...

If `u=cot^-1 sqrt(tanalpha)-tan^-1 sqrt(tan alpha),` then `tan(pi/4-u/2)` is equal to (a) `sqrt(tan alpha)` (b) `sqrt(cos alpha)` (c) `tan alpha` (d) `cot alpha`

A

`sqrt("tan" alpha)`

B

`sqrt(cot alpha)`

C

`"tan" alpha`

D

`cot alpha`

Text Solution

Verified by Experts

The correct Answer is:
A
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