Find a parametrization of the ellipse centered at the origin in the xy-plane that has major diameter 12 along the x-axis, minor
diameter 8 along the y-axis, and is oriented counter-clockwise. Use t as the parameter. It should change from 0 to 2*pi. Your parametrization should make the point (6,0) correspond to t = 0. x(t) =
y(t) =
(0 <= t <= 2*pi).