Find all polar coordinates of point P = (6, 31°) Please explain!!!!Twenty-five points!

1. (6, -329 deg) (-6, 211 deg) (-6, -149 deg) 
2. (5, -5pi/3) (-5, 4pi/3) (-5,-2pi/3) 

Notice that we have the following signs : (+,+),(+,-),(-,+),(-,-). 

If we consider angles beyond 360 deg or 2pi, many other names for these points can be determined.