For the angle negative Pi over 4, find the nearest two positive coterminal angles and the nearest two negative coterminal angles

Answer 1

When finding the closest coterminal angles, you have to add 2 pi to the original, and subtract 2 pi from the original.

(-pi/4) + 2 pi = (-pi/4) + (8 pi/4) = (7pi/4)

(-pi/4) - 2 pi = (-pi/4) - (8 pi/4) = (-9pi/4)