Prove that `(tan8theta)/(tantheta)=(1+sec2theta)(1+sec4theta)(1+sec8theta).`

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

(1-sec8 theta)/(1-sec4 theta)

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

Prove that tan2^ntheta/(tantheta) =(1+sec2theta)(1+sec2^2theta) ....(1+sec2^ntheta)

prove that 1+tan theta tan2 theta=sec2 theta

Find the value of tantheta(1+sec2theta)(1+sec4theta)(1+sec8theta) .

prove that : (tan 2^n theta)/(tan theta) = (1+sec 2theta) (1+ sec 2^2 theta) (1+sec 2^3 theta) … (1+ sec 2^n theta)

prove that : (tan 2^n theta)/(tan theta) = (1+sec 2theta) (1+ sec 2^2 theta) (1+sec 2^3 theta) … (1+ sec 2^n theta)

Prove that 1 + tan 2 theta tan theta = sec 2 theta .

Prove that (tan theta)/(sec theta-1)+(tan theta)/(sec theta+1)=2 "cosec"theta.