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“三角函数的应用”是苏教版必修四第一章《三角函数》第三节第四部分的内容.教科书专门设置这一节,意图是让学生感受三角函数在解决具有周期性变化规律问题中的作用,体验三角函数与日常生活和其他学科的联系.建立和运用三角函数模型解决实际问题,对教师来说是很简单的,但对高一学生而言,却是一个全新的内容.什么是简谐运动?为什么三角函数模型能描述和刻
“The application of trigonometric function ” is the content of the fourth part of the third chapter of the fourth chapter of the fourth edition of the trigonometric function of the Sujiao edition textbook set up specifically for this section, intended to allow students to feel trigonometric functions in the solution with a cyclical change The problem of law, and experience the connection between trigonometry and daily life and other disciplines.The establishment and use of trigonometric function model to solve practical problems is very simple for teachers, but for the freshmen, it is a brand new What is harmonic motion? Why trigonometric models can describe and engrave