Evaluate :
`sin^2theta / ( 1 - costheta )`

Evaluate : ( Sin^3theta + Cos^3theta )/ ( Sintheta + Costheta )

Evaluate : ( ( Sin^3theta + Cos^3theta ) / ( Sintheta + Costheta ) ) + Sintheta Costheta =

Evaluate : ( Cos^2theta - Sin^2theta ) / ( ( Costheta - Sintheta )^2

Evaluate : ( Cos^2theta - Sin^2theta ) / ( ( Costheta - Sintheta )^2

Evaluate : ( Sintheta + Costheta ) ( 1 - Sintheta Costheta ) = Sin^3theta + Cos^3theta

Prove that : (sin theta)/(1 - costheta) = cosec theta + cot theta

Evaluate : a Sin^3theta Costheta + a Sintheta Cos^3theta

Evaluate sqrt((1-cos theta)/(1+costheta))

Evaluate : ( Cos^3theta + Sin^3theta ) / ( Costheta + Sintheta ) + ( Cos^3theta - Sin^3theta ) / ( Costheta - Sintheta )

If sqrt3costheta=sintheta , then the value of (4sin^(2)theta-5costheta)/(3costheta+1) is: