Precalculus: Mathematics for Calculus, 7th Edition

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

Chapter 6 - Section 6.3 - Trigonometric Functions of Angles - 6.3 Exercises - Page 499: 19

Answer

1

Work Step by Step

csc(-630°)=1/sin(-630°)=1/sin(720°-630°)=1/sin90°=1
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