Question

Find a positive and negative angle who's absolute value is less than 2π and is coterminal with the given angle -8π/3

Answer 1

to find a coterminal angle, you can either add or subtract 2pi

keep adding 2pi until you get a positive angle with an absolute value less than 2pi
repeat the same process to find a negative coterminal angle, except subtract

Answer 2

for example, suppose I have the angle 0pi, I can add 2pi or subtract 2pi to get 2pi and -2pi, which are both coterminal with 0pi

Answer 3

Thanks!