How do you plot the point #A (5, -255^\circ)# and the point #B (3, 60^\circ)#?
The coordinates of your points are given in polar form. Basically with this kind of representation the first number represents the distance of your point from the origin. The second is the angle that the line joining the origin and your point makes with the positive
So you have:
The dotted lines represent the distances from the origin of
The negative angle in