Answer
0
Work Step by Step
Let arccos (1)= y.
Then, cos y= 1.
⇒ cos y= cos 0
⇒ y= 0.
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 4 - Section 4.7 - Inverse Trigonometric Functions - 4.7 Problem Set - Page 261: 24
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