What is `(2tantheta)/(1+tan^(2)theta)` equal to ?

What is (2 tan theta)/(1+tan^2theta) equals to ?

What is (1-sin^(2)theta)(1+tan^(2)theta) equal to ?

If tantheta+(1)/(tantheta)=2 then the value of tan^(2)theta+(1)/(tan^(2)theta) is equal to :

(tan^(2)(2 theta)-tan^(2)theta)/(1-tan^(2)(2 theta)tan^(2)theta) is equal to-

(tantheta)/sqrt(1+tan^2theta) = ………………

If tan theta + (1)/(tan theta) = 2, then tan^2 theta + (1)/(tan^2 theta) is equal to

If theta=60^(@) , then (1+tan^(2)theta)/(2tan theta) is equal to

(sin theta[(1-tantheta)tantheta+sec^(2)theta])/((1-sin theta)tantheta(1+tantheta)(sec theta+tantheta)) is equal to :

What is (1+ tan^(2) theta)/(1+cot^(2) theta) -((1-tan theta)/(1-cot theta ))^(2) equal to ?

If sintheta=(3)/(5) ,verify that (tantheta)/(1+tan^(2)theta)=sinthetacostheta .