Prove that: `(cos2theta)/(1+sin2theta)=tan(pi/4-theta)`

Prove that cos (2theta) /(1+sin 2 theta)=tan(pi/4-theta)

Prove that: (cos2 theta)/(1+sin2 theta)=tan((pi)/(4)-theta)

Prove that: (cos theta)/(1+sin theta)=tan((pi)/(4)-(theta)/(2))

Prove that cos theta/(1-sin theta)=tan (pi/4+theta/2)

Prove that (1+sin theta)/(1-sin theta)=tan^2(pi/4+theta/2)

Prove that (1 - cos 2 theta)/( sin 2 theta) = tan theta.

Prove that: a) (sin2theta)/(1+cos2theta) = tantheta b) (1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=cottheta

Prove that: a) (sin2theta)/(1+cos2theta) = tantheta b) (1+sin2theta+cos2theta)/(1+sin2theta-cos2theta)=cottheta

Prove that: (sin2 theta)/(1+cos2 theta)=tan theta

Prove that: (sin2 theta)/(1+cos2 theta)=tan theta