如图,将边长为6的等边
ABC放置在平面直角坐标系中,则A点坐标为_______ .
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更新时间:2016-12-06 12:07:34
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【推荐1】对于平面直角坐标系 xOy 中的点 P(a,b) ,若点 P 的坐标为(a kb, ka b) (其中k 为常数,且k 0) ,则称点 P 为点 P 的“ k 属派生点”,例如: P(1, 4) 的“2 属派生点”为P(1 2 4, 2 1 4). 即 P(9,6) 若点 P 在 x 轴的正半轴上,点 P 的“ k 属派生点”为 P点,且线段 PP 的长度为线段OP 长度的 3 倍,则k 的值_____ .
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【推荐2】如图,
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两点在反比例函数
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【推荐1】如图,分别以
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和等边
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【推荐2】如图,等边
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【推荐1】如图,在⊙O中,AB为直径,∠ACB的平分线交⊙O于D,AB=6,则BD=_____ .
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