## Trigonometry 7th Edition

Positive Coterminal Angle: $585^o$ Negative Coterminal Angle: $-135^o$ Refer to the image below for the drawing.
(refer to the attached image in the answer part above) The angle is positive so from the positive x-axis (initial side is the blue segment), move 225 degrees counterclockwise (terminal side is the green segment). To find a positive angle coterminal with the given angle, add 360 degrees to the angle to obtain: $=225^o + 360^o \\= 585^o$ To find a negative angle coterminal with the given angle, subtract 360 degrees to the angle to obtain: $=225^o-360^o \\=-135^o$