1. Introduction to Trigonometry
Angles and Radians
(MA3A2): Define an understand angles measured in degrees and radians.

2. Converting Degrees to Radians
*Multiply by ∏ radians
180 degrees
EX: 60°
EX: 300°
EX: 225°
EX: -315°

3. ON YOUR OWN: Convert to radian measure. Give answer in terms of ∏.° ° ° ° °

4. ON YOUR OWN: Convert to radian measure. Give answer in terms of ∏.° ° ° ° °

5. Converting Radians to Degrees
*Multiply by degrees
∏ radians
EX:
EX:
EX:
EX:

6. ON YOUR OWN: Convert to Degrees
19.
20.
21.
22.
23.

7. ON YOUR OWN: Convert to Degrees
19.
20.
21.
22.
23.
-210°
-2160°
135°
225°
270°

8. WARM-UP: Common Degree and Radian Measures
Fill in the table with the radian equivalents.
*Multiply by ∏ radians
180 degrees
DEGREES 0°
30°
45°
60°
90°
120°
135°
150°
180°
RADIANS
210°
225°
240°
270°
300°
315°
330°
360°

9. WARM-UP: Common Degree and Radian Measures
DEGREES 0°
30°
45°
60°
90°
120°
135°
150°
180°
RADIANS
210°
225°
240°
270°
300°
315°
330°
360°