## Multivariable Calculus, 7th Edition

Given:$r=\frac{3}{2-2cos\theta}$ or $r=\frac{(3/2)}{1-cos\theta}=\frac{(1).(3/2)}{1-(1).cos\theta}$ The graph of $r=\frac{3}{2-2cos\theta}$ is a side-ways parabola with eccentricity $1$. See the attached graph.