Terminal Sides of Angles (Example Problems)
How to determine what quadrant the terminal side of angle will fall:
1) Where will the terminal side of 220o fall? Quadrant III b/c 180 < 220 < 360
2) Where will the terminal side of 480o fall? Quadrant II b/c 480 – 360 = 120, and 90 < 120 < 180
Determine 2 co-terminal angles, one positive and one negative
1) 25o: 385o (25 + 360) and -335o (angle – 360)
2)
:
(
+ 2π) and
(
- 2π)