Section5.1 Angles and Their Measure

Angles

Measuring Angles Using Degrees

Names of Angles

Measuring Angles Using Radians

Example 20 inches 5 inches

Relationship between Degrees and Radians

Example

Example

Drawing Angles in Standard Position

Angles Formed by Revolution of Terminal Sides

Example

Degree and Angle Measures of Selected Positive and Negative Angles

Coterminal Angles

Example

Example

Example

The Length of a Circular Arc

Example

Example

Linear and Angular Speed

Example

(a) (b) (c) (d)

(a) (b) (c) (d)