Section 3-4 Radian Measures of Angles. Definition: Radian Measure of an Angle.

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Presentation transcript:

Section 3-4 Radian Measures of Angles

Definition: Radian Measure of an Angle

r = 1 r = x 1 unit x units 1 radian A 1 radian angle subtends the same fraction of a circle regardless of the length of the radius.

Procedure: Radian-Degree Conversion To find the radian measure of q, multiply the degree measure by To find the degree measure of q, multiply the radian measure by

Radian Measures of Some Special Angles

e.php Angle Target Practice Radian Measure and the Unit Circle

1 A B C D E F G Convert to radians H

2 Convert 4.73 radians to degrees

3Find the radian measure of an angle whose sine is 0.4

4Find the degree measure of an angle whose sine is 0.4

5Find the exact value of A B C D E F G HUndefined

Radian Mode: Degree Mode: Your calculator:

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