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int(0)^(pi//4) [sqrt(tan x) + sqrt(cot x...

`int_(0)^(pi//4) [sqrt(tan x) + sqrt(cot x)] dx` is equal to

A

`(pi)/(sqrt(2))`

B

`(pi)/(2)`

C

`(3 pi)/(sqrt(2))`

D

`pi`

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a
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