弧度度的关系 鼠标跟随 碰撞角度==

/*舞台上有mc1,mc2*/
var speed:Number = 2;
var dx:Number = mc1.x - mc2.x;
var dy:Number = mc1.y - mc2.y;
var dist:Number = Math.sqrt(dx * dx + dy * dy);
var radians:Number = Math.atan2(dy,dx);//弧度
var drgress:Number=radians*180/Math.PI;//弧度转化成度
//(radians=drgress/(180/Math.PI)||radians=drgress/180*Math.PI)
trace(drgress);
var vx:Number = Math.cos(radians) * speed;
var vy:Number = Math.sin(radians) * speed;