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- 工程测量学中前方交会的vb代码:已知A、B两点坐标,观测了角a、b,求P点坐标。用坐标反算AB方向的坐标方位角。-Engineering measurement science in front of the intersection of vb code: known A, B, two coordinates, the observation angle a, b, seeking a point P coordinates. Calculated by coordinates, the a