Answer
y-axis, $(2k+1)\frac{\pi}{2}$, where $k$ is an integer.
Work Step by Step
According to the graph it is symmetric to the y-axis and has vertical asymptotes at $(2k+1)\frac{\pi}{2}$, where $k$ is an integer.
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 6 - Trigonometric Functions - 6.5 Graphs of the Tangent, Cotangent, Cosecant, and Secant Functions - 6.5 Assess Your Understanding - Page 417: 4
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