Hi All,

Can anyone help me with to how to calculate the compass bearing between grid references on a map, or direct me where to look? I'm hoping to produce a table in Excel that shows the bearing from any one point to any other point when I have a few dozen grid references to choose from. I'm using MGRS and not Lat/Long, so I think its just plotting points on an X,Y axis and a bit of Sine/Cos/Tan. Max distance is about 4 miles and tolerance is the thickness of a pencil line (about 1 degree).

I don't remember trig from high school and my excel skills are very low compared to most people on this forum. So far all I've managed is to manually plot and measure the bearings, or input the data into my GPS (which is pretty tedious) and let it do the calculation. Thanks for any help you can provide. MICHAEL SMITH.