int_(0)^( pi/2)(1)/(5+4sin x)dx

int_(0)^(pi//2)(1)/(5+13 sin x) dx=

int_(0)^(pi//2)(1)/(13+5sin x)dx=

int_(0)^(pi//2)(1)/(5+4cos x)dx=

int_(0)^(1)(tan^(-1)x)/(x)dx is equals to int_(0)^((pi)/(2))(sin x)/(x)dx(b)int_(0)^((pi)/(2))(x)/(sin x)dx(1)/(2)int_(0)^((pi)/(2))(sin x)/(x)dx(d)(1)/(2)int_(0)^((pi)/(2))(x)/(sin x)dx

int_(0)^( pi/4)(dx)/(1-sin x)

int_(0)^( pi/4)(dx)/(1+sin x)

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

int_(0)^(pi//2)(1)/(1+4sin^(2)x)dx=

int_(0)^((pi)/(2))(dx)/(5+4sin x)

Evaluate: int_(0)^(pi/2)(dx)/(4sin^(2)x+5cos^(2)x)