" (ii) "(sec theta-tan theta)/(arctg theta+tan theta)=1-2sec theta tan theta+2tan^(2)theta

Prove that : (sec theta-tan theta)/(sec theta+tan theta)= 1-2 sec theta tan theta+ 2 tan^2 theta .

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

Prove the following identities: (sec-tan theta)/(sec theta+tan theta)=1-2sec theta tan theta+2tan^(2)theta

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

(sec theta+tan theta)/(sec theta-tan theta)+(sec theta-tan theta)/(sec theta+tan theta)

(sec theta+ tan theta)(sec theta-tan theta) =____.

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

prove that (1)/(sec theta -tan theta) = sec theta + tan theta

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

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