`(2cos^2theta-1)((1+tantheta)/(1-tantheta)+(1-tantheta)/(1+tantheta))=?`

The value of (2cos^(2)theta-1)((1+tantheta)/(1-tantheta)+(1-tantheta)/(1+tantheta)) is

(tantheta+2)(2 tantheta+1)= ?

(1-tantheta)(1+sin 2theta) = (1+tantheta)

costheta(tantheta+2)(2tantheta+1)=?

Solve: (1-tantheta)(1+sin2theta)=(1+tantheta)

Solve: (1-tantheta)(1+sin2theta)=(1+tantheta)

frac(sintheta [(1-tantheta) tan theta+sec^2 theta])((1-sintheta) tantheta(1+tan theta) (sec theta+tantheta)) =?

Prove that (1+sin2theta)/(1-sin2theta)=((1+tantheta)/(1-tantheta))^2

Prove that (1+sin2theta)/(1-sin2theta)=((1+tantheta)/(1-tantheta))^2