Chapter 2 - Acute Angles and Right Triangles - Section 2.5 Further Applications of Right Triangles - 2.5 Exercises - Page 86: 3

A

To measure this bearing, we have to remember each quadrant equals $90^{\circ}$. We select graph A. If we begin to measure the angle from the N, then from N to S we have $180^{\circ}$. Subtracting the $20^{\circ}$ from the $180^{\circ}$ leaves us with $160^{\circ}$.