Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 8 - Polar Coordinates; Vectors - Section 8.1 Polar Cordinates - 8.1 Assess Your Understanding - Page 592: 58



Work Step by Step

The point (0,-2) lies on the y-axis a distance of 2 units from the pole (origin), so $r=2$ A ray with vertex at the pole through (0,-2) forms an angle $\theta=\frac{3\pi}{2}$ with the polar axis. The polar coordinates for this point can be given by $(2,\frac{3\pi}{2})$.
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