The curves r1(t)=<t,t^2,t^3> and r2(t)=<sin t, sin 2t, t> intersect at the origin. Find their angle of intersection correct to the nearest degree.
Please help~it's an urgent...
Thank you so much!
Ah, yes! The angel of intersection!
Oh, wait, you mean "angle". That's not nearly as much fun!
The angle between two curves is the angle between their tangent lines at the point. You can find the tangent of those angles by taking their derivatives.