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如图,直线y=x+3交x轴于A点,将一块等腰直角三角形纸板的直角顶点置于原点O,...
如图,直线y=
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x+3交x轴于A点,将一块等腰直角三角形纸板的直角顶点置于原点O,另两个顶点M、N恰落在直线y=
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x+3上,若N点在第二象限内,则tan∠AON的值为( )
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A.
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B.
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C.
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D.
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考点分析:
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