Evaluate :
`( 2tantheta )/( 1 - tan^2theta )`

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

If tan theta=(1)/(sqrt(3)), then find the value of (2tan theta)/(1-tan^(2)theta)

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

If tan theta = sqrt(3) , find the value of ((2 sec theta)/(1 + tan^(2) theta)) .

If tantheta = sqrt(3) find the value of ((2sectheta)/(1+tan^(2)theta))

Taking theta=30^(@) , verify each of the following (i) sin 2theta=2sin theta cos theta (ii) cos theta=2cos^(2)theta-1=1-2sin^(2)theta (iii) tan2theta=(2tantheta)/(1-tan^(2)theta)

Find the value of (1+tan^(2)theta)/(1+cot^(2)theta)

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

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