Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 1 - Functions - 1.4 Trigonometric Functions and Their Inverse - 1.4 Exercises - Page 48: 18

Answer

-1

Work Step by Step

tan(15pi/4)= tan(675°) According to the unit circle 675° would be the 45° triangle on the IV quadrant; therefore tan(675°) would -1.
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