极坐标是新课标中的选修内容,也是新课标高考的考查内容.对某些解析几何问题,同学们习惯于利用直角坐标系思考,却很少考虑借助极坐标系来解决.实际上,解决某些解析几何问题,尤其涉及到长度和角度的解析几何问题,如果恰当引入极坐标,不但可以拓宽思 Polar coordinates is the elective content of the new curriculum standard, but also the examination content of the new curriculum standard college entrance examination .For some analytic geometry, students are accustomed to using the Cartesian coordinate system to think about, but rarely consider using polar coordinate system to solve .In fact, , To solve some of the analytical geometry problems, especially with regard to the length and angle of the analytic geometry, if properly introduced polar coordinates, not only broaden thinking