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一、什麼是acos函數 acos函數是反餘弦函數，如果y=cos(x)，則x=acos(y)。acos函數的定義域為[-1,1]，值域為[0,π]。acos函數可以用於計算兩個向量…

React, developed by Facebook, has been one of the most popular JavaScript libraries in the…