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向量作为一种数学解题工具,不仅能帮助我们很快推出三角形的正弦定理、余弦定理,而且还能帮助我们快速解决关于判定三角形的形状、点与三角形的位
Vectors as a tool of mathematical problem solving can not only help us to quickly introduce triangle sine theorem and cosine theorem, but also help us quickly solve the problem of determining the shape of a triangle, the point and the triangle