**Back azimuths are calculated as follows: if the original azimuth is less than 180 degrees you add 180 degrees to the original azimuth, thus an azimuth of 45 degrees (<180) will have a back azimuth of 225 degrees. If the original azimuth is greater than 180 degrees you subtract 180 degrees from the original azimuth.**

## How to Calculate Back Azimuth?

Back azimuth is a tool used in navigation to determine the angle between a given location and a destination. It is an important part of navigational techniques, as it helps sailors and other navigators to determine the direction of travel.

The calculation of back azimuth is relatively simple, but it is important to understand the concept and the mathematics behind it.

To calculate the back azimuth, you must first identify the two points of reference. The first point of reference is the origin point, which is the starting point of the voyage.

The second point of reference is the destination point, which is the final point of the voyage. Once these two points of reference have been identified, you can then calculate the angle between them, which is the back azimuth.

To calculate the back azimuth, you will need to know the latitude and longitude of both points. You can find these coordinates by using any type of map or GPS system.

Once you have the coordinates, you can then use a formula to calculate the back azimuth. The formula is as follows: Back Azimuth = (destination latitude – origin latitude) + (destination longitude – origin longitude). Once you have calculated the back

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