" 25."int_(0)^( pi/4)(sin(cos2x))/(cosec2x)dx" Find the year of "

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

int_(0)^( pi/4)(x^(2)(sin2x-cos2x))/((1+sin2x)cos^(2)x)dx

If int_(0)^(pi/2) f ( sin2 x ) sin x dx = A int_(0)^(pi/4) f ( cos 2 x ) cos x dx then the value of A is ( sqrt2 = 1.41)

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

Evaluate :int_(0)^( pi/4)cos2x sqrt(4-sin2x)dx

int_(0)^( pi)cos2x*log(sin x)dx

(i) int_(0)^(pi//4) e^(tanx) . sec^(2) x dx (ii) int_(0)^(pi//4) (sin (cos 2x))/(" cosec " 2x)dx