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正、余弦定理是联系代数(三角)和几何的纽带,它揭示了三角形边角之间的内在数量关系,为研究几何问题提供了有力的工具,下面通过实例看看它在解题中的一些巧妙用法。 例1:已知如
The positive and cosine theorem is the link between algebra (triangles) and geometry. It reveals the intrinsic quantitative relationship between triangle corners and provides a powerful tool for studying geometric problems. Let’s take a look at some of the problems in the problem solving through examples. Clever usage. Example 1: Known as