#Python has a built-in module that you can use for mathematical tasks. #Python 有一個內建模組，可用於數學任務。 #The math module has a set of methods and constants. #The math.atan2() method returns the arc tangent of ...
angel = Math.atan(slope) //slope值计算为y/x （斜率比值无法判断 y、x方向，如－1/－1， 1/－1等情况） //angel为一个角度的弧度值 ...
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