Find the equation of line joining the points : `(a costheta_1, b costheta_2), (a costheta_2, b sintheta_2) `

Find the slope of a line joining the points (sintheta, -costheta) and (-sintheta, costheta)

Evaluate : ( sintheta + costheta ) ( sintheta - costheta )

Evaluate : |(2costheta, -2sintheta),(sintheta, costheta)| .

((1-sintheta+costheta)^(2))/((1+costheta)(1-sintheta))=?

Evaluate |(2costheta,-2sintheta),(sintheta,costheta)|

Prove that (1-sintheta+costheta)^2=2(1+costheta)(1-sintheta)

Evaluate : 1/costheta + sintheta/costheta = ?

If A=[(costheta,sintheta),(-sintheta,costheta)] Find A^2

The solution of the equation |(costheta,sintheta,costheta),(-sintheta,costheta,sintheta),(-costheta, -sintheta,costheta)|=0 is -