Respuesta :
Coterminal angles have a multiple of 360° in their difference.
840 + 120 = 960
-600- 120 = 720 = 2*360
-180-120 =-300
480+120= 600
840 + 120 = 960
-600- 120 = 720 = 2*360
-180-120 =-300
480+120= 600