Chapter 5 Trigonometric Functions 5 1 Angles and

Chapter 5 Trigonometric Functions 5. 1 Angles and Their Measure Copyright © 2015, 2011, 2007 Pearson Education, Inc. 1

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Radians Copyright © 2015, 2011, 2007 Pearson Education, Inc. 7

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Find the length of the arc of a circle of radius 4 meters subtended by a central angle of 0. 5 radian. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 11

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(a) 80° (b) 140° (c) -30° Copyright © 2015, 2011, 2007 Pearson Education, Inc. (d) 100° 14

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Find the area of the sector of a circle of radius 5 feet formed by an angle of 40°. Round the answer to two decimal places. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 19

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Linear Speed Angular Speed Copyright © 2015, 2011, 2007 Pearson Education, Inc. 21

A child is spinning a rock at the end of a 2 -foot rope at the rate of 200 revolutions per minute (rpm). Find the linear speed of the rock when it is released. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 22