When on a course of 000 degrees, what is the reciprocal course?

To determine the reciprocal course, you need to add or subtract 180 degrees from the current heading. In this case, the course is 000 degrees. When you add 180 degrees to this heading, you proceed as follows:

000 degrees + 180 degrees = 180 degrees.

Alternatively, if you prefer to subtract, you can still find the reciprocal by ensuring it remains within the 360-degree range, which reinforces that the reciprocal of 000 degrees is indeed 180 degrees.

The correct answer focuses on this calculation, emphasizing that the reciprocal course represents the direction exactly opposite on a compass. Choosing an option like 040 degrees or any other listed option would not yield the correct reciprocal since they do not align with the calculation performed.