Question: simplify equation-scale factor in curvilinear coordinates

hi, i have an equation and i cant simplify it. i claculate with hand and i know the answer but with maple i cant give answer.

       aa:= sin(theta + tao s) cos(d s) + p d cos(theta + tao s) sin(d s)

        bb:=  sin(theta + tao s) sin(ds) - p d cos(theta + tao s) cos(d s)
                 cc:=          a d cos(theta + tao s)
hr:=sqrt ( aa^2 +bb^2 +cc^2 )


the answer is 1 if u are calculate this. but in maple i cant calculate.




email :

Please Wait...