边长DMN=73.469m,方位角αMN=115°18′12″,则ΔxMN与Δy

练习题库2022-08-02  6

问题 边长DMN=73.469m,方位角αMN=115°18′12″,则ΔxMN与ΔyMN分别为(  )。A.+31.401m,+66.420mB.+31.401m,66.420mC.-31.401m,+66.420mD.-66.420m,+31.401m

选项 A.+31.401m,+66.420m
B.+31.401m,66.420m
C.-31.401m,+66.420m
D.-66.420m,+31.401m

答案 C

解析
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