> Ist this true: (3cos(T))^2 =3D 9cos(T) ?
> Right now I only had time to read through it very fast, but that seems
> to be (3cos(T))^2 =3D 9cos(T)^2?!
dx had a cos(T) in it, and the denominator had the cos(T)^2, and for email
formatting's sake I did a few steps at once. That part's correct, although
my method might not have been too clear.
-Scott