(a)Find the value of `int(1-tan x)/(1+tan x)dx`

int (1-tan^2x)/(1+tan^2x) dx

Find the value of int_(0)^(2pi)1/(1+tan^(4)x)dx

The value of int {1+tan x*tan (x + A)}\ dx is

Evaluate: int(tanxsec^2x)/(1-tan^2x)dx

int(tan(1+log x))/(x) dx

Evaluate: int(tan^2xsec^2x)/(1+tan^6x)dx

Evaluate: int ((1)/(1+tan x))dx

The value of int (tan x )/(tan ^(2) x + tan x+1)dx =x -(2)/(sqrtA) tan ^(-1) ((2 tan x+1)/(sqrtA))+C Then the value of A is:

Evaluate: int(tan^(-1)x)/(1+x^2)dx

Evaluate: int(tan^-1x)^2/(1+x^2)dx