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16.2 Arc Length and Radian Measure

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Presentation on theme: "16.2 Arc Length and Radian Measure"— Presentation transcript:

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)

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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, ∏ ° °


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