Minimum distance between a point and a line in latitude, longitude

Question

I have a line with two points in latitude and longitude
A: 3.222895, 101.719751
B: 3.227511, 101.724318

and 1 point
C: 3.224972, 101.722932

Ho

Answer 1

See post here: https://stackoverflow.com/a/33343505/4083623

For distance up to a few thousands meters I would simplify the issue from sphere to plane. Then, the issue is pretty simply as a easy triangle calculation can be used:

We have points A and B and look for a distance X to line AB. Then:

Location a;
Location b;
Location x;

double ax = a.distanceTo(x);
double alfa = (Math.abs(a.bearingTo(b) - a.bearingTo(x))) / 180
            * Math.PI;
double distance = Math.sin(alfa) * ax;