Answer
$r \geq 1,~~~$ $\pi \leq \theta \leq 2\pi$
This region includes all the points outside the circle centered on the origin with a radius of 1 that are on or below the horizontal axis. Note that the points on the bottom half of this circle are also included in the region.
Work Step by Step
$r \geq 1,~~~$ $\pi \leq \theta \leq 2\pi$
The region includes all points that are a distance of 1 or farther from the origin and located on or below the horizontal axis. This region includes all the points outside the circle centered on the origin with a radius of 1 that are on or below the horizontal axis. Note that the points on the bottom half of this circle are also included in the region.
