论文部分内容阅读
三角恒等变换是高考考查的重要知识点之一.但在角的合理转化,构造齐次式,均值不等式与三角恒等变换的综合,以及平面四边形中的三角恒等变换问题中,部分考生还显得捉襟见肘,力不从心,这是他们在三角恒等变换中容易出现的失分点,所以掌握好它们就显得十分必要.下面通过归类举例的方法加以具体说明.失分点1角的合理转化
Triangular identity transformation is one of the important knowledge points in the college entrance examination. However, in the reasonable transformation of angles, the construction of homogeneous, the integration of mean inequality and trigonometric identity transformation, and the triangular identity transformation in the plane quadrilateral, some candidates It also appears to be overstretched and incompetent. This is a point of disappointment that they are prone to appear in the trigonometric transformation. Therefore, it is very necessary to master them. The following is a detailed description by way of categorizing examples.