已知边长，方位角，则分别为：A.+31.401m,+66.420mB.+31.401m,-66.420mC.-31.401m,+66.420mD.-3

发布时间：2021-02-14 14:30:13

1.[]已知边长，方位角，则分别为：A.+31.401m,+66.420m B.+31.401m,-66.420m C.-31.401m,+66.420m D.-31.401m,-66.420mABCD