解斜三角形及某应用问题难度大、综合性强、解题有一定的技巧,学生在解题时,经常因为审题不细、考虑不周、方法不当等原因而错解题目.下面就学生在解题中出现的错误分类辨析如下,供大家参考.一、已知条件弱用【例1】在不等边△ABC中,a为最大边,如果a2b2+c2,求A的取值范围.错解 The solution of oblique triangles and an application problem is difficult, comprehensive, and has certain skills in solving problems. When students are solving problems, they often misunderstand the problem because of inaccurate, ill-considered, improper methods, etc. The error classification that appears in the problem-solving problem is as follows for your reference. First, the weak condition of known conditions [Example 1] In the equilateral △ ABC, a is the largest edge, if a2b2+c2, find the value range of A Misinterpretation