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在整个备考复习过程中,我查阅了一些近几年中的高考试题,三角函数求解问题一直占比很大。结合个人理解,我将从四个方面探讨三角函数解题中隐含条件的挖掘:挖掘轴线角信息、对已知三角函数值对应的角范围信息进行有效挖掘、挖掘三角形当中的角的范围信息、检验多个三角函数值或者角度对应的结果。从列举的实例当中发现挖掘隐含条件具有一定的重要性。
Throughout the pro forma review process, I reviewed some of the college entrance examination papers in recent years, the problem of trigonometric functions has always accounted for a large proportion. In combination with personal understanding, I will explore the mining of implicit conditions in trigonometric function solving from four aspects: digging axis information, effectively excavating the angular range information corresponding to the known trigonometric functions, and mining the range information of triangles , Test the results of multiple trigonometric functions or angles. It is of some importance to find mining implicit conditions from the listed examples.