int_(0)^(4)ln(cot a+tan x)dx," Where "a in(0,(pi)/(2))" is "

int_(0)^(a)log(cot a+tan x)dx where a in(0,(pi)/(2)) is (A) a ln sin a(B)-a ln sin a(C)-a ln cos a (D) none of these

The value of int_(0)^(a) log ( cot a + tan x) d x , where a in (0,pi//2) is equal to

The value of int_(0)^(a) log ( cot a + tan x) d x , where a in (0,pi//2) is equal to

The value of int_(0)^(a) log ( cot a + tan x) d x , where a in (0,pi//2) is equal to

The value of int_(0)^(a) log ( cot a + tan x) d x , where a in (0,pi//2) is equal to

int_0^a log (cota+ tanx)dx where a in (0,pi/2) is

int_0^a log (cota+ tanx)dx where a in (0,pi/2) is

let f(a)=int_(0)^(a)ln(1+tan a tan x)dx then f'((pi)/(4)) equals

int_(0)^(pi//4) log (1+tan x) dx =?

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