Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 5 - Section 5.2 - Trigonometric Functions of Real Numbers - 5.2 Exercises - Page 417: 20

Answer

a) 2/√3 b) 2 c) -1/2

Work Step by Step

Check the unit circle. If value is negative, add 2π until value is within domain of 02π, subtract 2π until value is within domain of 0
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