[高中數學 三角函數(三角比)] #6 (講解) 參考角 : "為什麼"可以秒殺廣義三角函數(三角比)的計算

2021 7:40
Synopsis
影片在1:32的地方口誤,應該要說:1號”終邊”對應到的廣義角是30度。 學參考角,是為了秒殺廣義三角函數的計算,大部分學生會算 ...
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