What is the back azimuth of a course heading of 275 degrees?

To find the back azimuth of a course heading, you need to understand that the back azimuth is derived by adding or subtracting 180 degrees from the original heading. In this case, the course heading is 275 degrees.

When you subtract 180 degrees from 275 degrees, you calculate:

275 - 180 = 95 degrees.

This calculation yields the back azimuth, which indicates the direction you would face if you were to turn around and head in the opposite direction of the original course.

It's important to note that if the result of this calculation exceeds 360 degrees, you would subtract 360 to find the equivalent heading. However, in this instance, there is no need to do that as the resulting angle is below 360 degrees, confirming that 95 degrees is indeed the correct back azimuth for a heading of 275 degrees.