Write a user-defined function that determines the polar coordinates of a point from the Cartesian coordinates in a two-dimensional plane. For the function name and arguments, use [th rad] = CartToPolar (x, y). The input arguments are the x and y coordinates of the point, and the output arguments are the angle e and the radial distance to the point. The angle θ is in degrees and is measured relative to the positive x axis, such that it is a positive number in quadrants I and II, and a negative number in quadrant III and IV. Use the function to determine the polar coordinates of points (14, 9), (-11, -20), (-15, 4), and (13.5, -23.5).

(x, y)