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[单选题]
A点的坐标为(500,500),AB的距离为200m,AB的方位角为45°,则B点的坐标为()。
A.纵坐标641.4,横坐标641.4
B.纵坐标641.4,横坐标358.6
C.纵坐标358.6,横坐标641.4
D.纵坐标358.6,横坐标358.6
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A.纵坐标641.4,横坐标641.4
B.纵坐标641.4,横坐标358.6
C.纵坐标358.6,横坐标641.4
D.纵坐标358.6,横坐标358.6
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