Question

1. an airplane flies on a course of $210^{circ}$.

a. sketch this course.
b. express this course as a bearing.

Explanation:

Step1: Understand course vs bearing

Course is 210° from positive x-axis (standard position). Bearing uses N/S + angle to E/W.

Step2: Convert 210° to bearing

210° - 180° = 30° below negative x-axis, which is 30° west of south. So bearing is S 30° W.

Answer:

a. (Sketch description: Start at origin, draw a line 210° from positive x-axis (standard position), pointing southwest.)
b. S 30° W