[計量] JJ問題一問QWQ!
JJ第18題
XY座標系從原點(0,0)經過(X,11/10x)的直線的angle與45度比大小 答案是A@口@!!!
我是覺得如果座標裡面的11/10X的X在分子的話好像才是A...@@
想問大大這題如何解呢@@~感激不盡
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