三角函数是每年高考必考内容,前几年考查三角函数的变换比较多,这几年在考查三角变换的基础上,主要考查三角函数的图象和性质.这是三角问题考查的落脚点.结合2006年全国各地高考试题,下面分析一下三角函数图象和性质考查的主要考点和题型,使同学们在高一学习这部分内容时就能总体上把握好学习的方向. The trigonometric function is an examination content of the annual college entrance examination. In the past few years, the trigonometric function has been studied more frequently. In the past few years, based on the examination of the trigonometric transformation, the image and nature of the trigonometric function have mainly been examined. This is the cornerstone of the examination of triangular problems. Combine the high examination questions of all parts of the country in 2006, the following analyzes the main test points and questions of trigonometric functions and the nature of the examination, so that the students can grasp the direction of learning as a whole as they learn this part of the content.