Answer
$r=\frac{sin \theta}{\theta}$
Since $r \to 0$ as $\theta \to \infty $, the curve resembles an oscillating curve becoming flatter and flatter as $r$ increases.
Work Step by Step
$r=\frac{sin \theta}{\theta}$
Since $r \to 0$ as $\theta \to \infty $, the curve resembles an oscillating curve becoming flatter and flatter as $r$ increases.
See the attached graph.
The graph is symmetrical about the x-axis, so the negative y-axis values should show a mirror image of the positive y-axis values.