If `tan^4theta+tan^2theta=1` , prove that, `cos^4 theta+cos^2theta=1`

If tan^4theta - tan^2 theta= 1 , then prove that cos^4theta+ cos^2theta = 1

If tan^4 theta+ tan^2 theta=1 then the value of cos^4 theta+cos^2 theta is यदि tan^4 theta+ tan^2 theta=1 हो, तो cos^4 theta+cos^2 theta का मान क्या होगा?

Prove that: cos^2theta(1+tan^2theta)=1 .

prove that cos^2theta(1 + tan^2 theta) = 1

If tan^(4)theta +tan^(2) theta = 1 , then the value of cos^(4)theta +cos^(2)theta is-

If tan2theta.tan4theta=1 , find sin2theta+cos4theta=?

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

If 7sin ^2theta +3cos^2theta =4 , prove that, tan theta =pm1/sqrt(3) .

Prove that (tan 5theta + tan 3theta)/(tan 5theta - tan 3theta) = 4 cos 2theta cos 4theta