Computing derivative of parametric equation This is probably a silly question but I am just not sure if I understand what to do.
So I have the parametric equations:
$x=6\cos (t)-2\\   y=5\sin (t)+3$ 
I am asked to compute $\dfrac{dy}{dx}$ at the point $(3\sqrt{2}-2, 3-\frac{5}{\sqrt{2}})$
So 
$$\frac{dy}{dx}=\frac{\frac{dy}{dt}}{\frac{dx}{dt}}\implies\frac{dy}{dx}=-\frac{5\cos(t)}{6\sin(t)}$$
Now where do I plug the above numbers in to find $\dfrac{dy}{dx}$? Am I on the right track?

Hint: $\cos t = \dfrac{x+2}{6}$, and $\sin t = \dfrac{y-3}{5}$
