8. For the curve given by r(t) = (sin³ t, cos³ t, sin² t), 0≤ t ≤, Find an equation for each (d) the curvature

A child enters a carousel that takes one minute to revolve once around. The child enters at the point (0,1), that is, on the due north position. Assume the carousel revolves counterclockwise.   What are the coordinates of the child after 30 seconds?   Enter the exact answer as a point, (a,b)