Simplify `1/(1-tantheta)+1/(1+tantheta)`

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

What is the value of [(1)/((1-tantheta))]-[(1)/((1+tantheta))] ?

((1-tantheta)/(1-cottheta))^(2)+1=

Simplify tan theta [(sectheta,tantheta),(tantheta,-sectheta)]+sectheta[(-tantheta,-sectheta),(-sectheta,tantheta)]

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

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

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

If sectheta+tantheta=5 , then the value of (tantheta+1)/(tantheta-1) is

(tantheta)/(1-cottheta)+(cottheta)/(1-tantheta) is equal to -