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Unformatted text preview: Section 4.1 Angles and Their Measure, p. 1 Section 4.1: Angles and Their Measure 1) Recognize and use the vocabulary of angles . Ray, angle, initial side, terminal side, vertex, standard position, positive angles, negative angles, quadrant, quadrantal angle. 2) Use degree measure . a. One degree, 1 , is 1/360 of a complete rotation around a circle. b. Types of angles: acute: < < 90 right: = 90 obtuse: 90 < < 180 straight: = 180 Section 4.1 Angles and Their Measure, p. 1 Section 4.1 Angles and Their Measure, p. 2 3) Draw angles in standard form . a. An angle is in standard form when the vertex of the angle is placed at the origin, the initial side is placed along the positive xaxis and the terminal side is found by rotating degrees counterclockwise for a positive angle and clockwise for a negative angle. b. Example 1 : Draw each angle in standard position: 1. 45 , 2. 225 3. 135 , 4. 405 4) Find coterminal angles ....
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This note was uploaded on 04/07/2008 for the course MTH MTH162 taught by Professor Bundick during the Spring '08 term at VCCS.
 Spring '08
 BUNDICK
 Calculus, Angles

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