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在直角坐标平面的第一象限内有一点P(x,4),点O是原点,∠α是OP与x轴的正半...
在直角坐标平面的第一象限内有一点P(x,4),点O是原点,∠α是OP与x轴的正半轴的夹角.如果cosα=0.6,那么下列各直线中,不经过点P的是( )
A.y=
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B.y=
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C.y=2x-2
D.y=
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x+
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