` 1+ tan theta tan (theta/2) =`

Prove that :1+tan theta tan2 theta=sec2 theta

prove that 1+tan theta tan2 theta=sec2 theta

If tan theta + (1)/(tan theta) = 2, then tan^2 theta + (1)/(tan^2 theta) is equal to

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

if f(theta)= Costheta_1.Cos theta_2. cos theta_3….. Cos theta_n, show that { tan theta_1+ tan theta_2+ tan theta_3+…..+ tan theta_n } = - {(f' (theta))/(f(theta))},

Solve : (1- tan^2 theta)/(tan^2 theta)

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

Prove that (sec 8theta-1)/(sec 4 theta -1) = (tan 8theta)/(tan 2theta)