Which angles are coterminal with 3pi/2?

The answer choices are:

11pi/2

-pi/2

Pi/2

-7pi/2

To find a positive coterminal angle and a negative one with a given angle, you can add and subtract 360 ° if the angle is measured in degrees or 2π if the angle is measured in radians

We have then:

3pi / 2 + 2pi = 7pi / 2

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

answer

-pi/2

7pi / 2