Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 6 - 6.1 - Angles and Their Measure - 6.1 Exercises - Page 431: 36

Answer

1 radian.

Work Step by Step

If a circular arc is drawn from the extremity of the initial side to the extremity of the terminal side, the length of this arc, $s$, is about the same length of the sides, that is, the radius of the arc, $r$. $s\approx r$
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