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

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

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

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

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

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

(sintheta+sin2theta)/(1+costheta+cos2theta) =

(sintheta+sin2theta)/(1+costheta+cos2theta)=?

The value of (cos^(3)theta+sin^(3)theta)/(costheta+sintheta)+(cos^(3)theta-sin^(3)theta)/(costheta-sintheta) is equal to

Let x = 2sintheta - sin2theta and y = 2costheta - cos2theta find (d^2 y)/(dx^2) at theta= pi

If x= 2 sintheta - sin2theta and y= 2 costheta - cos 2theta then (d^2y)/(dx^2) " at " theta =pi is :