Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 6 - Trigonometric Functions - 6.2 Trigonometric Functions: Unit Circle Approach - 6.2 Assess Your Understanding - Page 378: 5



Work Step by Step

If we reflect a point $(x,y)$ about the $y$-axis then, the reflected point is $(-x,y)$. Hence reflecting $\left(\frac{1}{2},\frac{\sqrt3}{2}\right)$ about the $y$-axis gives $\left(-\frac{1}{2},\frac{\sqrt3}{2}\right)$.
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