Answer
$E$.
Work Step by Step
For $\theta=60^\circ$, we have $csc\theta=\frac{1}{sin\theta}=\frac{1}{\sqrt 3/2}=\frac{2\sqrt 3}{3}$, thus the answer is $E$.
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 5 - Trigonometric Functions - 5.3 Trigonometric Functions Values and Angle Measures - 5.3 Exercises - Page 531: 5
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