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int (1)/(1 + cos^(2) x) dx =...

`int (1)/(1 + cos^(2) x) ` dx =

A

`(1)/(sqrt(2)) tan^(-1) ((tan x)/(sqrt(2))) + C `

B

`(1)/(sqrt(3)) tan^(-1) ((tan x)/(sqrt(3))) + C `

C

`(x)/(2) + C `

D

`(1)/(sqrt(2)) tan^(-1) ((tan x)/(sqrt(3))) + C `

Text Solution

Verified by Experts

The correct Answer is:
A
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