墙 墙头草 Unregistered / Unconfirmed GUEST, unregistred user! 2003-04-09 #2 c*c := a*a +?b*b 再用三角形定理定律，k := c/a 在求反函数
J jianl Unregistered / Unconfirmed GUEST, unregistred user! 2003-04-09 #6 function ArcTan(X: Extended): Extended; Description In Delphi code, ArcTan returns the arctangent of X. X is a real-type expression that gives an angle in radians.
function ArcTan(X: Extended): Extended; Description In Delphi code, ArcTan returns the arctangent of X. X is a real-type expression that gives an angle in radians.
F firewall586 Unregistered / Unconfirmed GUEST, unregistred user! 2003-04-09 #7 我用ArcTan返回的是一个Extended类型的值，怎么样变成角度呢？
J jianl Unregistered / Unconfirmed GUEST, unregistred user! 2003-04-09 #8 我想得到的应该是弧度吧，可能是 arctan()*180/3.1415926
太 太阳火 Unregistered / Unconfirmed GUEST, unregistred user! 2003-04-09 #9 对，得到的是弧度要*180/pi (因为pi radian=180 degree)
