" 3) "(1)/(sec theta-tan theta)-(1)/(cos theta)=(1)/(cos theta)-(1)/(sec theta+tan theta)

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

Prove the following identity : 1/(sec theta+tan theta) -1/(cos theta) = 1/(cos theta) - 1/(sec theta-tan theta) .

(1/(cos theta)-1/(sin theta))+1/(cosec theta-cot theta)-1/(sec theta+tan theta) =?

Prove the following identity : 1/(sec theta-tan theta)= (1+sin theta)/(cos theta) = sec theta+tan theta .

(1-cos^2theta)sec^2 theta= tan^2 theta

Prove the following identity : 1/(sec theta+tan theta)= (1-sin theta)/(cos theta) = sec theta-tan theta .

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

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

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

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