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圆是数学的重要部分,是解析几何的基础,是高考主要考察的内容之一.高考试题对圆的考查逐年在增加,有些实际问题利用圆的知识解题简便易行,下面谈谈构造圆的解题技巧,供同学们参考.一、一般遇到sinα,cosα可以构造圆
The circle is an important part of mathematics, and it is the basis of analytical geometry. It is one of the contents of the main examination of the college entrance examination. The examination of high examination questions on the circle is increasing year by year. Some practical problems make use of the circle of knowledge to solve the problem is simple and easy. Let’s talk about the construction circle. The problem solving skills for students to refer to. First, the general encounter sin α, cos α can construct a circle