자바스크립트 Math 객체 JavaScript Math Object 참조 : http://www.w3schools.com/js/js_obj_math.asp Matk 객체 메소드 Method Description FF N IE abs(x) Returns the absolute value of a number 1 2 3 acos(x) Returns the arccosine of a number 1 2 3 asin(x) Returns