solve `tantheta+costheta=2sectheta`

Solve: tantheta+sectheta=2costheta

If sintheta=4/5 , find the value of (4tantheta-5costheta)/(sectheta+4cottheta)

Prove: (sectheta+costheta)(sectheta-costheta)=tan^2theta+sin^2theta

Prove: tantheta+1/(tantheta)=sectheta\ cos e c\ theta

Prove that (costheta)/(sectheta-tantheta)=1+sintheta .

Prove that: (sintheta-costheta+1)/(sintheta+costheta-1)=1/(sectheta-tantheta)

Prove that : sintheta(1+tantheta)+costheta(1+cottheta)=cosectheta+sectheta

Prove that (sintheta-costheta+1)/(sintheta+costheta-1)=1/(sectheta-tantheta) , using the identity sec^2theta=1+tan^2theta

Prove the following trigonometric identities: (tantheta+sintheta)/(tantheta-sintheta)=(sectheta+1)/(sectheta-1)

Prove that : (tan theta)/(sectheta+1)-(tantheta)/(1-sectheta)=2cosec theta