programming-examples/js/Math/Calculate degrees between 2 points with inverse Y axis.js

function pointDirection(x1, y1, x2, y2) {  
    return Math.atan2(y2 - y1, x2 - x1) * 180 / Math.PI;  
}  
  
console.log(pointDirection(1, 0, 12, 0));  
console.log(pointDirection(1, 0, 1, 10));