(ii)quad (1+cos theta)/(1-cos theta)

tan(2tan^(-1)sqrt((1+cos theta)/(1-cos theta)))+tan theta=0

tan ( 2 tan ^(-1)sqrt((1+cos theta)/(1-cos theta)))+ tan theta =0

Prove each of the following identities : (i) sqrt((1+ sin theta)/(1- sin theta)) = ( sec theta + tan theta) (ii) sqrt((1- cos theta)/(1+ cos theta))= ("cosec" theta - cot theta) (iii) sqrt((1+ cos theta)/(1- cos theta))+ sqrt((1- cos theta)/(1+ cos theta)) = 2 "cosec" theta

1/(1-cos theta) + 1/(1+cos theta)

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

root(7)((1+cos theta)/(1-cos theta))+sqrt((1-cos theta)/(1+cos theta))=2cos ec theta

sqrt((1+ cos theta)/( 1- cos theta)) + sqrt((1- cos theta)/( 1 + cos theta )) ( 0 lt theta lt pi ) is

The value of (1+ cos theta)(1- cos theta) "cosec"^(2) theta =

Prove: (1 + cot^2 theta) (1 + cos theta)(1-cos theta) = 1

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