Answer
$n\pi$
Work Step by Step
The graph of sine function crosses the x-axis when $\sin x=0$. We know that the sine is 0 for integral multiples of $\pi$.
Therefore, the sine function crosses the x-axis for numbers of the form $n\pi$.
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
978-0-13-421743-7
ISBN 13:
978-0-13421-743-7
Chapter 4 - Graphs of the Circular Functions - Section 4.1 Graphs of the Sine and Cosine Functions - 4.1 Exercises - Page 149: 3
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