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

Prove each of the following identities : (i) (sec theta -1)/(sec theta +1) =(sin^(2) theta)/((1+ cos theta)^(2) ) (ii) (sec theta - tan theta)/(sec theta + tan theta) = (cos^(2) theta)/((1+ sintheta)^(2))

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

(sec theta-tan theta)/(sec theta+tan theta)=cos^(2)((pi)/(4)+(theta)/(2))

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

Prove that (sec theta-tan theta+1)/(sec theta+tan theta+1)=(1-sin theta)/(costheta) .

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

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

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

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

Prove that : (sec theta-tan theta)/(sec theta+tan theta)= 1-2 sec theta tan theta+ 2 tan^2 theta .