public function newPoint(start_gradian, long, speed, time)

 {

  if(start_gradian < 0)  { start_gradian *= -1; }

  var k = Math.sqrt(9.8 / long);

  var b_value = ((start_gradian * k) / speed);

  var b = Math.atan((start_gradian * k) / speed);

  b /= 180/Math.PI;

 

  var tau = 2 * Math.PI / k;

 

  var alfa = Math.sqrt(Math.pow(start_gradian,2) + Math.pow((speed / k) , 2));

 

     new_gradian = alfa *  Math.sin( k * time + b);

 

           new_gradian = Number(new_gradian.toFixed(2));

  trigonCalc(400, 20, new_gradian, long);

 }