Whichway
Whichway is a small JavaScript library for working out the bearing between 2 locations.
var location1 = lng: 151187142 lat: -33907319;var location2 = lng: 151196117 lat: -33907319; var myBearing = location1 location2;
You can also get the distance between 2 locations in kilometres
var myDistance = location1 location2;