P113第30题 点之名称 观测角φ 角之余切4 Y PP xp|4421.71 yp|116843 A 6400330 xA43646.351ctga0486473y4105454 B β159°46′40 g3873.96ctg10.582533 B 1772.68 ∑|1.069006 P 4421.68 yp116850 Ba255°30′36″4z33873.964ctga20687024y172.68 C|Bx72°4447“xc4538454ctgp20.31057yc186257 ∑0.9976014 中数z4421.70 中数y1168461 xActgB+xactga+(yB-yA X P ctga +ctgF yactgB+yBctgc-(x BA A ctgc+ctgFP113第30题