" 25."int_(0)^( pi)(x tan x)/(sec x cosec x)dx

int_(0)^( pi)(n tan x)/(sec x+cos x)dx

int_(0)^(pi) (tan x)/(sec x + cos x) dx=

int_(0)^(pi)(x tan x)/(Sec x+ Cos x) dx =

Using properties of definite integrals,prove the following : int_(o)^( pi)(x tan x)/(sec x csc x)dx=(pi^(2))/(4)

int_(0)^(pi) (x tan x)/( sec x + tan x) dx=

int_(0)^(pi)(x tanx)/(sec x +tan x)dx

int1/(sec x + cosec x) dx