Answer
Ignoring negative signs when graphing the cosine and the secants would not affect the graph as they are both even functions.
Work Step by Step
Ignoring negative signs when graphing the cosine and the secants would not affect the graph as they are both even functions.
$f(-x)=f(x)$
Therefore,
$\cos(-\theta)=\cos\theta$ and $\sec(-\theta)=\sec\theta$ so the graphs would be the same regardless of the negative sign.
