I have this problem:

Evaluate the line integral, whereCis the given curve.

∫Cxyz ds

C:x= 9sin(t),y=t,z= -9cos(t), 0 ≤t≤π

After applying the parametrization and everything, I ended up with having to integrate something like: t*sin(t)*cos(t)dt

I have no clue how to integrate that. Integration by parts fails as far as I see, and I can't think of any identities or other tricks to change it to something workable.