问题
单项选择题
已知边长DMN=73.469m,方位角αMN=115°18′12″,则ΔxMN与ΔyMN分别为:
A.+31.401m,+66.420m
B.+31.401m,-66.420m
C.-31.401m,+66.420m
D.-31.401m,-66.420m
答案
参考答案:C
已知边长DMN=73.469m,方位角αMN=115°18′12″,则ΔxMN与ΔyMN分别为:
A.+31.401m,+66.420m
B.+31.401m,-66.420m
C.-31.401m,+66.420m
D.-31.401m,-66.420m
参考答案:C