If `tan theta + 1/ tan theta` = 2, then show that ` tan^2 theta + 1/tan^2 theta= 2`.

prove that If tan theta + (1)/ (tan theta) = 2 then show that prove tan^2 theta + (1) / (tan^2 theta)

tan theta+1/tan theta=2 then prove that tan^2theta+1/tan^2theta=2

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

If sec theta - tan theta = 1/2, then theta lies in the

(3) 1 + tan^2 theta =?

(2 sin theta * tan theta (1- tan theta ) + 2 sin theta sec^(2) theta )/( (1+ tan theta)^(2))= .......... A) (sin theta)/(1+ tan theta) B) (2 sin theta)/(1+ tan theta) C) (2 sin theta)/((1+ tan theta )^(2)) D) (sin theta)/((1+ tan theta)^(2))

If tan theta =1, then tan(90-theta)=?