1. 16.2 Arc Length and Radian Measure

2. Arc Length- understood to be the distance along a circular arc measured in linear units (such as feet or centimeters)

6. Formula Sheet gives: 1 degree = _∏__ radians 180°
How to convert to radian measure?
Formula Sheet gives:
1 degree = _∏__ radians
180°
1 radian = 180° degrees ∏
Radian- a unit of angle measure based on arc length. In a circle of radius r, if a central angle has a measure of 1 radian, then the length of the intercepted arc is r units.
2∏ radians = 360° radian ≈ 57°

7. 1. Convert 180° to radian measure.

8. 3.Convert ∏ to degrees. 4
4.Convert 2∏ to degrees. 3

9. page , 13-19
13. 2∏/9
14. 4∏/9
15. 5∏/9
16. ∏/15
17. 0, ∏/6, ∏/4, ∏/3, ∏/2, 2∏/3, 3∏/4, 5∏/6, ∏ ° °