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正、余弦定理是反映三角形中边与角之间关系的两个重要定理,如果将它们两者加以整合变形,就能得到一组相应的变式及其进一步的推广.利用正、余弦定理的变式和对应的推广,可以用来处理一些相应的竞赛题.
The positive and cosine theorem are two important theorems that reflect the relationship between the sides and angles of a triangle. If they are both integrated and deformed, a set of corresponding variants and their further generalizations can be obtained. The use of positive and cosine theorem Variants and corresponding promotion can be used to deal with some corresponding contest questions.