三角知识是高中时期数学课程的核心部分之一,包括了大量的函数知识及数学思想,学习三角知识能够帮助学生增强计算水平、必要的空间想象力及逻辑思维能力.但问题是在实际工作中,这部分知识往往不容易理解,成为教学中的难点.本文拟就积极培养数形结合意识、借鉴向量等工具、利用计算机辅助手段等三个方面进行探讨,以求化解这一教学难点.学生感觉困难主要来源于几个方面,一是概念理解不易,对像任意角三角函数、周期函数这样的概念都极陌生;二是公式较多、容易 Triangular knowledge is one of the core parts of mathematics curriculum in high school, including a large number of functional and mathematical thinking, learning trigonometry can help students to enhance the level of computing, the necessary spatial imagination and logical thinking ability.But the problem is in the actual work , This part of the knowledge is often not easy to understand and become a teaching difficult.This paper intends to actively cultivate several combination of awareness, learn from vectors and other tools, the use of computer-aided means to explore three aspects in order to resolve the teaching difficulties. Feeling difficult mainly comes from several aspects, one is not easy to understand the concept of arbitrary trigonometric functions such as periodic functions such concepts are very strange; Second, the formula is more easy