/sci/ - Science & Math

Just for clarification, they want me to differentiate the position vector r(t) for the velocity vector and then find the parametric equations for the velocity vector (x= and y=) then plug in [math] t_0 = \frac{3pi}{2} [/math] right?
The 'tangent line to a smooth curve.... etc' has me very confused so this is what I understood from it.