Determine the smallest positive measure of .
The initial side of an angle in standard position in a rectangular coordinate system stays the same, regardless of whether the
measure of the angle is given as positive or negative. Thus, it is not possible to merely change the sign of a angle from
negative to positive to determine its positive measure. Rather, imagine rotating the terminal side of the angle in an
anticlockwise direction until it returns to its original position. Doing so would be the equivalent of adding to the angle's
measure, so the positive measure of a angle in standard position in a rectangular coordinate system is .