int_(0)^( pi/4)log(1+tan x)dx" is equal to: "

The value of int_(0)^((pi)/(2))log(tan x)dx is equal to -

int_(0)^(pi//2) log | tan x | dx is equal to

int_(0)^((pi)/(2))log(tan x)*dx

int_0^(pi//2) log(tan x)dx =

Let a in(0,(pi)/(2)) ,then the value of lim_(a rarr0)(1)/(a^(3))int_(0)^(a)ln(1+tan a tan x)dx is equal to

int_(0)^(pi//2) log (tan x ) dx=

int_0^(pi//2) log(tan x) dx is :

The value of int_(0)^(pi)log sin^(2)x dx is equal to -