1. Standard Position foran Angle: Vertex at the origin Initial side on the x-axis y 90o Terminal side -180o x 360o Initial side 180o -90o 270o

2. Draw the angle 210 in standard position. y 90o x 180o 270o Example 2-1a

3. Draw the angle -45in standard position. y 90o x 180o 270o Example 2-1a

4. Draw the angle 540 in standard position. y 90o x 180o 270o Example 2-1a

5. Unit Circle C = C = 360o = 180o =

6. Answer: Rewrite 30 in radians. 180o = 30 deg Example 2-2a

7. Rewrite 45in radians. 180o = 45deg 45 Answer: Example 2-2a

8. Rewrite in degrees. 180o = radians Answer: –300 Example 2-2b

9. Find one angle with positive measure and one angle with negative measure coterminal with 210. y A positive angle is A negative angle is 90o x 180o 270o Example 2-4a

10. Find one angle with positive measure and one angle with negative measure coterminal with A positive angle is A negative angle is Example 2-4b