In a rectangular coordinate system, bearings can be expressed in two ways:

1. Clockwise from North (standard bearing)
2. Counterclockwise from the positive x-axis (also called azimuth or polar coordinates)

Given that the airplane is located at the point $(-10, 0)$, this means the airplane is 10 units directly to the left of the origin, lying on the negative x-axis.

Method 1: Bearing Clockwise from North (Standard Bearing)

In this method, we measure the angle clockwise from the north (positive y-axis). Since the point $(-10, 0)$ is directly west of the origin, the bearing is 270° from North.

Method 2: Bearing Counterclockwise from the Positive X-axis (Azimuth)

In this method, we measure the angle counterclockwise from the positive x-axis. Since the airplane is located directly on the negative x-axis, the azimuth is 180°.

Final Answer:

• Standard bearing (clockwise from North): 270°
• Azimuth (counterclockwise from positive x-axis): 180°

Would you like further details on how these angles are measured or any clarifications?

Here are five related questions you might consider:

1. What is the bearing of an object located at $(10, 0)$?
2. How would you calculate the bearing of a point at $(3, 4)$?
3. What are some practical applications of using standard bearings in navigation?
4. How does the concept of a unit circle relate to these bearings?
5. Can bearings ever be negative, and if so, how would they be interpreted?

Tip: Bearings always need to be described within the proper reference framework, so pay attention to whether you're working with standard or azimuth bearings.