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如图,在直角坐标系中,已知点A(1,),O是坐标原点.若连接OA,将线段OA绕点...
如图,在直角坐标系中,已知点A(1,
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),O是坐标原点.若连接OA,将线段OA绕点O逆时针旋转90°得到线段OB,则点B的坐标是( )
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A.(
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,-1)
B.(
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,-1)或(
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,1)
C.(
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,1)
D.以上答案都不对
考点分析:
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