解析几何与三角有着紧密的联系,因而将解析几何问题三角化是解解析几何问题的重要途径。由于三角学给我们提供了为数众多的公式,因此,灵活选用三角知识,常使问题化繁为简,而且掌握这种方法,对于拓展思路、提高综合运用知识的能力,有重要意义。 Analytic geometry is closely related to triangles. Therefore, triangulation of analytic geometry problems is an important way to solve geometric problems. As trigonometry has provided us with a large number of formulas, the flexibility in the selection of triangular knowledge has often made the issue simple and simple, and mastering this method has important implications for expanding ideas and improving the ability to comprehensively use knowledge.