Calculus 8th Edition

Published by Cengage
ISBN 10: 1285740629
ISBN 13: 978-1-28574-062-1

Appendix D - Trigonometry - D Exercises - Page A32: 19

Answer

Since, the given angle is negative therefore, we will move clockwise from the x-axis as depicted in the figure:
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Work Step by Step

Given: $-\frac{3\pi}{4}$ rad $=-135^{\circ}$ The standard position of an angle occurs when we place its vertex at the origin of a coordinate system and its initial side on positive x-axis. A positive angle is obtained by rotating the initial side counterclockwise until it coincides with the terminal side. Likewise, negative angles are obtained by clockwise rotation . Since, the given angle is negative therefore, we will move clockwise from the x-axis as depicted in the figure:
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