Like the square cartesian coordinate grid that you are probably used to seeing there is also another general kind of grid called the polar coordinate grid, which is a circular grid. It is shown on top of the square grid below. Like the square grid, it gives you an idea where points would go when you plot them with different parameters.

Change the parameters below and see if you can predict where the point will go. See if you can get the blue point inside the 4 red targets.