参考答案:1.推算坐标方位角 ΑBl=89°12'01"-32°30'12"+180'=236'41'49" Α12=236°41'49"-261°06'16"+180'=155'3533" 2.计算坐标增量 B1 =123.704Xcos236°41'49"=-67.922m, B1 = 123.704Xsin236°41'49"=-103. 389m 。 &'2 =98.506Xcos155°35'33"=-89.702m 8Y12 =98.506Xsin155°35'33"=40.705m。 3.计算 1.2 点的平面坐标 X1=3065.347-67.922=2997.425m Yl=2135.265-103.389=2031.876m X2=2997.425-89.702=2907.723m Y2=2031.876+40.705=2072.581m
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