(1-cos theta)(1+cos theta)(1+cot^(2)theta)=.........

(1 - cos^(2)theta)cot^(2)theta

(1 - cos^(2)theta)cot^(2)theta

(sin theta + sin 2 theta)/( 1+ cos theta + cos 2 theta)= .................. A) 1/2 tan theta B) 1/2 cot theta C) tan theta D) cot theta

cos^(2)theta+1/(1+cot^(2)theta)=1

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

Given cot theta =(7)/(8) , then evaluate (i) ((1+sin theta )( 1-sin theta ))/( (1+cos theta )(1-cos theta )) " "(ii) cot^2 theta

Prove that (1+cos theta)/(1-cos theta)+(1-cos theta)/(1+cos theta)=4cot theta*cos theta

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

Prove the following identities: (1-cos theta)/(1+cos theta)=(cos ec theta-cot theta)^(2)

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