Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 1 - Section 1.2 - The Rectangular Coordinate System - 1.2 Problem Set - Page 25: 63



Work Step by Step

Complement of $60^{\circ}$ will be another angle that terminal side needs to sweep in order to reach position y i.e. standard position of $90^{\circ}$. Obviously it will be $30^{\circ}$. Another way to find complement of an angle will be to subtract it from $90^{\circ}$. Hence complement of $60^{\circ}$ = $90^{\circ}$- $60^{\circ}$ = $30^{\circ}$
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