本文将通过举例,对常用曲线的极坐标方程的求法和应用作进一步的探讨,以期帮助同学们较为深刻地掌握极坐标的有关知识.一、常用曲线的极坐标方程的求法求曲线的极坐标方程的思路和求直角坐标方程的思路是类似的,通常的步骤是:①建系;②设点;③列出曲线上任一点的极径与极角之间的关系式;④将列 In this paper, by way of example, the common curve of the polar equation of the method and application for further discussion, with a view to helping students more profound understanding of the polar coordinate knowledge. First, the common curve of the polar equation to find the polar coordinates of the curve The idea of ​​the equation is similar to that of finding the Cartesian coordinate equation. The usual steps are: ① building a system; ② setting a point; ③ setting the relation between the polar radius and polar radius at any point on the curve;