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.

E.g.

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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