Properties
Radian180
Radian180: number = 3.141592653589793
Radian360
Radian360: number = 6.283185307179586
Radian90
Radian90: number = 1.5707963267948966
dl180divPI
dl180divPI: number = 57.29577951308232
dlPIdiv180
dlPIdiv180: number = 0.017453292519943295
Static PI
PI: number = 3.141592653589793
각(degree,radian)을 다루는 클래스