Graph the angle 3 in standard position and classify it acco

Graph the angle = /3 in standard position and classify it according to where its terminal side lies. Find three coterminal angles, at least one of which is positive and one of which is negative.

Solution

angle = /3

Its terminal side lies in IVrth quadrant

Coterminal angles : positive : -pi/3 + 2pi = 5pi/3

                                           - pi/3 +2pi +2pi = 11pi/3

                negative = -pi/3 - 2pi = -7pi/3

                               -pi/3 - 2pi -2pi = -13pi/3