初学数列与解三角形,难免遇到学习中的困难,为帮助大家学好这部分,现把注意点列举如下:一、如何理解“边边角”三角形问题产生的多解的情况正余弦定理刻画了三角形的边角之间的数量关系,提供了边角互化的依据,对于已知“边边角” Beginners learn to solve a series of triangles, inevitably encounter difficulties in learning, in order to help everyone learn this part, now pay attention to the points are listed as follows: First, how to understand the “edge corner” Triangle problem multi-solution situation Sine cosine law Characterizes the quantitative relationship between the corners of the triangle and provides a basis for the corners to be interpolated, for known “edge angle”