[請益] 請教高中斜率概念
各位大神老師您們好
小的在輔導高中數學時
有個概念不知道怎麼釐清
敘述如下
再講授斜率M=tan(THITA), 0<_THITA<_180
不知到這邊是不是能夠跟廣義三角做結合
如果行的話 在THITA=90度時,是無意義的
那這樣在一開始的
角度範圍內 是不是要屏除90度的部分
因為TAN函數是定義在 -Pi/2<_THITA<_Pi/2
這部分 該怎麼做解釋呢?
謝謝
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