(1-cos theta)/(1+cos theta)=((1-cos theta)/(sin theta))^(2)=(cosec theta-cot theta)^(2)

(sin theta)/((1+cos theta))+((1+cos theta))/(sin theta)=2cosec theta

prove that (1-cos theta)/(1+cos theta)=(csc theta-cot theta)^(2)

Prove that ((1+cos theta)/(cos theta))((1-cos theta)/(cos theta))cosec^(2)theta=sec^(2)theta

Prove that ((1+cos theta)/(1-cos theta))=("cosec"theta + "cot"theta)^(2)

(sin^(2) theta)/(1-cos theta)-(cos^(2) theta)/(1-sin theta)=cos theta-sin theta

(cos theta)/(cosec theta+1)+(cos theta)/(cosec theta-1)=2tan theta

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

(1)/(1-cos theta)-(1)/(1+cos theta)=(2cos theta)/(sin^(2)theta)=2cot theta xx csc

csc theta(1+cos theta)(csc theta-cot theta)=1

(2sin theta*cos theta-cos theta)/(1-sin theta+sin^(2)theta-cos^(2)theta)=cot theta