“三角恒等变换”是普通高中课程标准实验教科书数学4(必修)第三章的内容,放在“三角函数”和“平面向量”之后,它从编写理念、编排体系、内容要求、课程实施较之大纲教材都有一些明显的变化,下面根据学习人教A版教材的体会并结合编写鄂教版教材过程中的一些思考,对这一部分内 “Triangle Equality Transformation” is the content of the third chapter of ordinary high school curriculum standard experiment textbook mathematics 4 (compulsory), after “trigonometric function” and “plane vector”, it starts from composing ideas, layout system, content requirements, Compared with the outline of the textbook there are some obvious changes, the following based on the learning of people to teach A version of teaching materials experience combined with the preparation of teaching materials in the process of E version of some thinking, to this part