Reciprocal bearing calculation.

Quickly finding the reciprocal of your course or a bearing can be useful.

If you struggle with the maths, there is a simple short cut. Instead of adding 180 degrees to a bearing try adding 200 then subtract 20.


Bearing 127
Add 200 327
Subtract 20 307


Bearing 323
Subtract 200 123
Add 20 143

Most people can handle adding and subtracting 2 much easier that 180!


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