LPWS Basic Knowledge Practice Exam

A radar search sector is described by where it is centered (the center bearing) and how wide the wedge is (the angular width). The combination with 310° as the center bearing and 72° as the width gives a meaningful, non-degenerate wedge: it’s centered toward the northwest and spans 72°, covering 274° to 346° when you apply half-width on either side of the center. This matches how radar sectors are typically defined and scanned, including scenarios where the sector crosses the 360° boundary.

The other options either imply no sector at all (width of zero) or would require interpreting the numbers in a way that isn’t the standard center-and-width representation used for a radar search sector.