Consider the parametric curve:

$x=13cos,y=9sin,-\frac{}{2}\frac{}{2}$

The curve is $($part of$)$ an ellipse and the cartesian equation has the form

$\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$

with $a=$

and $b=$

The initial point has coordinates: $x=,y=$

$$

The terminal point has coordinates: $x=,y=$