(tan theta)/(sec theta-1)+(tan theta)/(sec theta+1)=

tan2 theta(sec8 theta-1)=tan8 theta(sec4 theta-1)

(tan theta+sec theta-1)(tan theta+1+sec theta)=(2sin theta)/(1-sin theta)

(sec theta+tan theta)/(sec theta-tan theta)+(sec theta-tan theta)/(sec theta+tan theta)

Prove the following identities: (sec-tan theta)/(sec theta+tan theta)=1-2sec theta tan theta+2tan^(2)theta

(tan theta)/(sec theta+1)+(sec theta+1)/(tan theta)=2cos ec theta

Prove that (sec4 theta-1)/(sec2 theta-1)=(tan4 theta)/(tan theta)

(1+sec theta-tan theta)/(1+sec theta+tan theta)=

prove :(sec8 theta-1)/(sec4 theta-1)=(tan8 theta)/(tan2 theta)

Prove : (sec theta-1)/(tan theta)=(tan theta)/(sec theta+1)

Prove that: (sec8 theta-1)/(sec4 theta-1)=(tan8 theta)/(tan2 theta)