Evaluate `sec^2(theta/2)-tan^2(theta/2)`

sec^(2)theta=1-tan2 theta

If sec^(2)theta+tan^(2)theta=sqrt(3) , then the value of (sec^(4)theta-tan^(4)theta) is

(sec^(2)theta-1)/(tan^(2)theta)=?

Find the value of theta if sec^2theta+tan^2theta=1

The value of (sec^2 theta(2+tan^2 theta +cot^2 theta) div (sin^2 theta-tan^2 theta))/((cosec^2 theta+sec^2 theta)(1+ cot^2 theta)^2) is: (sec^2 theta(2+tan^2 theta +cot^2 theta) div (sin^2 theta-tan^2 theta))/((cosec^2 theta+sec^2 theta)(1+ cot^2 theta)^2) का मान ज्ञात कीजिए?

If cos theta=(1)/(2), find the value of (2sec theta)/(1+tan^(2)theta)

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

Prove that: sec^(4)theta-tan^(4)theta=sec^(2)theta+tan^(2)theta

Prove that (sec^(2)theta-tan theta)/(sec^(2)theta+tan theta) lies between 3 and (1)/(3).