北极熊网站扫描器，用于漏洞扫描，后台检测，注入点分析。-Polar Bear website scanner used to detect vulnerability scanning background

易语言数学坐标转换源码例程程序演示了极坐标与直角坐标，角度与弧度的转换过程。 -Easy language mathematical coordinate conversion source routine program demonstrates the polar coordinates and rectangular coordinates, angle and radian conversion process.