Answer
$ -\frac{\sqrt 3}{3}$
Work Step by Step
$tan330^\circ=tan(360-30)^\circ=-tan30^\circ=-\frac{\sqrt 3}{3}$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Chapter 5 - Trigonometric Functions - Chapter Test - Page 460: 10
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