坐标方位角的方算，方便了要计算的坐标正反算工作-Azimuth coordinates of the operator side and make it easier to calculate the coordinates of the positive and negative balance of work

实现高斯坐标正反算 适合测绘工程专业人员使用 本人已测试过了 精度没问题-Considered suitable for achieving positive and negative Gauss coordinate mapping project professionals I have no problem tested the accuracy