[aprssig] Dumb tracker question

[scott at opentrac.org]

> Please explain that statement Scott,  "For APRS purposes, it doesn't 
> need to be accurate to more than a degree"! A degree in any purpose 
> seems to be far out!! :-)  What were you suggesting?

The heading calculation doesn't need to be more accurate than 1 degree,
because it's only reported to the nearest degree anyway.  The standard ANSI
C trig functions work with double-precision floating point numbers (in
radians), which is way more precision than I need.

Scott
N1VG