Related Rates using circles can someone please help? I'm taking Calculus, but I'm really having trouble understanding the concept of related rates.
A jogger runs around a circular track of radius 55 ft. Let (x,y) be her coordinates, where the origin is the center of the track. When the jogger's coordinates are (33, 44), her x-coordinate is changing at a rate of 17 ft/s. Find dy/dt.
I tried making a triangle within the circle, and differentiating the Pythagorean Theorem to find the hypotenuse's length, but I'm stuck.
Thank you!

It's basically a related rates problem relying on implicit differentiation.  Find the equation of a circle, then take a differential and divide by dt (also known as taking the derivative with respect to time).  Then you substitute in dx/dt with the value you are given, and solve for dy/dt.
