Chapter 4.6, Problem 13PE

For Exercises 11-16, identify the statements among $\text{a-h}$ that follow directly from the given condition about $x$ .

a. $\text{csc }x$ is undefined.

b. $\text{sec }x$ is undefined.

c. The graph of $y=\sec x$ has a relative maximum at $x$ .

d. The graph of $y=\csc x$ has a relative minimum at $x$ .

e. The graph of $y=\sec x$ has a vertical asymptote.

f. The graph of $y=\csc x$ has a vertical asymptote.

g. The graph of $y=\csc x$ has a relative maximum at $x$ .

h. The graph of $y=\sec x$ has a relative minimum at $x$ .

The graph of $y=\cos x$ has a relative maximum at $x$ .