如何计算两个向量的夹角

计算两个向量的夹角 angle = atan2(vector2.y, vector2.x) - atan2(vector1.y, vector1.x); if (angle < 0) angle += 2 * pi; 举例 vector1 = [1,1]; vector2 = [-1,-1]; angle = atan2(vector2(2), vector2(1)) - atan2(vector

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