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三角函数是高中数学的一个非常重要的部分,在解题过程中,三角函数的应用也非常频繁.因此,三角函数的思想和用法对于高中生的解题技巧学习来说是一个关键的内容,学生不仅要掌握三角函数的知识,还要将三角函数与其他知识体系相结合地学习,掌握各个知识系统之间的联系.一、三角函数与定义域、值域的联系1.三角函数与定义域的结合是数学常见的问题,学生在解题时一定要观察解析式,根据解析式来列举出相应的关系.
Trigonometric function is a very important part of high school mathematics, and trigonometric functions are also used very often in solving problems.Therefore, the idea and usage of trigonometric functions are a key content for high school students’ problem-solving skills learning, Students not only need to master the knowledge of trigonometric functions, but also combine the trigonometric functions with other knowledge systems to master the connection among the various knowledge systems.First, the relationship between trigonometric functions and domain and range 1. Trigonometric functions and definitions The combination of domains is a common problem in mathematics. Students must observe analytic formulas in solving problems and list the corresponding relations according to the analytic formula.