解三角形是在原有的三角函数和三角恒等变换的基础上,通过对任意三角形边角关系的探究,用数量关系对三角形进行进一步的研究,主要内容是揭示三角形边角关系的正弦定理、余弦定理以及正、余弦定理在测量和几何计算中的应用,是高考命题的一个热点内容. On the basis of the original trigonometric functions and trigonometric identities transformation, the solution triangle is further studied by the quantitative relationship between triangles through the exploration of the relationship between the edges of any triangle. The main content is to reveal the sine law of the triangular corner relationship, the cosine Theorem and the positive cosine theorem in the measurement and geometric calculation of the application, is a hot topic college entrance examination content.