What is the reciprocal azimuth for an initial azimuth of 60º?

To determine the reciprocal azimuth, one must add 180 degrees to the initial azimuth if the initial azimuth is less than 180 degrees. If the initial azimuth exceeds 180 degrees, subtracting 180 degrees from the initial azimuth is the appropriate approach.

In this case, the initial azimuth of 60 degrees is less than 180 degrees. Therefore, we add 180 degrees to 60 degrees, resulting in a reciprocal azimuth of 240 degrees. This indicates that if you were to traverse in the opposite direction, the new bearing would be 240 degrees.

This concept is important in navigation and underwater orientation, as it helps divers and navigators understand the opposite direction of their current course, which can be critical for safety and planning.