" 21.(i) "sqrt((1+sin theta)/(1-sin theta))=(sec theta+tan theta)

(8) (1+sin theta)/(1-sin theta)=(sec theta+tan theta)^(2)

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

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

Prove that : sqrt((1-sin theta)/(1+sin theta))= {(sec theta- tan theta, if -pi/2 < theta< pi/2), (-sec theta+ tan theta, if pi/2 < theta< (3 pi)/2):} .

Prove the following identities : sqrt((1+sin theta)/(1-sin theta)) = sec theta + tan theta where theta is a acute

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

Prove that (i) (1- sin theta)/(1+ sin theta)=(sec theta - tan theta )^(2) (ii) ((1+cos theta))/((1- cos theta))= ("cosec" theta + cot theta)^(2)

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

Prove that sqrt(1+sin theta)/sqrt(1-sin theta)=sec theta + tan theta ,-(pi)/(2) lt theta lt (pi)/(2)