Question

How do you determine the measure of an angle coterminal with the angle `400^circ`?

Answer 1

Coterminal of angle `400^@ = 400 +- (n * 360)` where n is an integer.

Explanation:

Coterminal angle of `400^@ = 400 - 360 = 40^@`

Coterminal angle of `400^@ = 400 + 360 = 760^@`

Coterminal angle of `400^@ = 400 - 720 = -320^@`