Answer
$rises$, $falls$.
Work Step by Step
As can be seen from the graphs of sine and cosine functions, for the x-values $0$ to $\frac{\pi}{2}$, the graph of the sine function $rises$ and that of the cosine function $falls$.
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 6 - The Circular Functions and Their Graphs - 6.3 Graphs of the Sine and Cosine Functions - 6.3 Exercises - Page 600: 2
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