7. Solve the problem. Find parametric equations for an object that moves along the ellipse x2 1 with the motion described. 36 16 The motion begins at (0, 4), is counterclockwise, and requires 4 seconds for a complete revolution. O x = 6 sin (- nt), y = 4 cos (_ nt), Osts 4 O x=-6 cos (} nt), y = 4 sin ( nt), Osts 4 O x =-6 sin (_ nt), y = 4 cos (Ant), Ost= 4 x =-6 sin (4it) , y = 4 cos (4it) , Osts 4