` int_(0)^( pi/2)(sin x)/((1+cos x)^(3))dx=`

int_(0)^( pi/2)(sin x)/(1+cos x)dx

3. int_(0)^( pi/2)( sin2 x)/(1+cos^(2)x)dx

int_(0)^( pi)(sin x)/(1+cos^(2)x)dx =

int_(0)^(pi//2) x sin x cos x dx

int_(0)^(pi//6) (sin x) /(cos^(3)x) dx is

int_(0)^( pi/2)sin^(2)x cos x dx

int_(0)^( pi)(x sin^(3)x)/(1+cos^(2)x)dx

"int_(0)^( pi/2)(|sin x|+|cos x|)dx

int_(0)^(pi/2)(sin^(2)x*cos x)dx=

If A = int_(0)^((pi)/(2))(sin^(3)x)/(1+cos^(2)s)dx and B=int_(0)^((pi)/(2))(cos^(2)x)/(1+sin^(2)x)dx , then (2A)/(B) is equal to