1. Trigonometry Review

2. Angle Measurement To convert from degrees to radians, multiply byTo convert from radians to degrees, multiply by radians, so radians

3. Special Angles r=1

4. Special Angles - Unit Circle Coordinates r=1 π/3 5π/6 π/4 π/2 2π/3 3π/4 π/6 π0 3π/2

5. Trig Functions - Definitions (x,y) r 

6. Trig Functions - Definitions  opp adj hyp

7. Trig Functions - Definitions

8. Trig Functions Signs by quadrants all functions positivesin, csc positive tan, cot positivecos, sec positive

9. Special Angles - Triangles example:

10. Special Angles - Triangles

11. Special Angles - Unit Circle r=1

12. Special Angles For the angles example: Use the unit circle points (1,0), (0,1), (-1,0) and (0,-1) or look at the graphs for the trig functions r = 1 (1,0) (0,1) (0,-1) (-1,0)