Calculate angle between two Latitude/Longitude points

Question

Is there a way to calculate angle between two Latitude/Longitude points?

What I am trying to achieve is to know where the user is heading. For example, user is head

Answer 1

Sample javascript code if the distance between points is less -

brng = Math.atan2(newLat - oldLat, newLong - oldLong);
brng = brng * (180 / Math.PI);
brng = (brng + 360) % 360;
brng = 360 - brng;