如图,在平面直角坐标系中,线段
绕点O逆时针旋转
至线段
,点A经过的路程是
,若反比例函数
的图象经过
的中点B,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7a3e520a16d4fdd73c4e6a4ce7be0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c030b25575d683af91c06e6a3e4f463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7385795d7eab9691e21172c51a97428.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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更新时间:2024-05-15 12:53:53
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【推荐1】如图,菱形ABCD的边AD⊥y轴,垂足为点E,顶点A在第二象限,顶点B在y轴的正半轴上,反比例函数y=
(k≠0,x>0)的图象同时经过顶点C,D.若点C的横坐标为5,BE=3DE,则k的值为( )
![](https://img.xkw.com/dksih/QBM/2019/5/15/2204078102110208/2210079658401792/STEM/497318b394c247e8a0b545e78c591377.png?resizew=222)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abb3a62e46296c417261156b51ec6b4.png)
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【推荐2】如图,在直角坐标系中,O为坐标原点,函数
(
)和
(
)的图象上,分别有A、B两点,若AB∥x轴且交y轴于点C, 且OA⊥OB,
,
,则线段AB的长度为( )
![](https://img.xkw.com/dksih/QBM/2015/5/14/1573840103047168/1573840108945408/STEM/66ed9b0ed4f94d0f898caf69912325d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a249a4460b4edd504ae4dfecccd032bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18faa17bb2b0660e8270727077d9f15e.png)
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![](https://img.xkw.com/dksih/QBM/2015/5/14/1573840103047168/1573840108945408/STEM/66ed9b0ed4f94d0f898caf69912325d5.png)
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【推荐1】如图,在正方形
中,
分别是
的中点,
交于点G,连接
,下列结论:
,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b88a92c3f78aab24d2cc6944c53ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667f534c3893e5dcfe16be356202971a.png)
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【推荐2】如图,在△ABC中,∠C=90o,∠A=30o,分别以A、B两点为圆心,大于
AB为半径画弧,两弧交于M、N两点,直线MN交AC于点D,交AB于点E,若CD=2,则AC的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/29/dc8d4021-a0e1-4c47-9534-5936c96f74ab.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/29/dc8d4021-a0e1-4c47-9534-5936c96f74ab.png?resizew=151)
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【推荐1】如图,在平面直角坐标系
中,四边形
是矩形,点
,
,将矩形
绕点
逆时针旋转
,旋转后点B的对应点
的坐标和点B在旋转过程中绕过的路径长分别是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/5b55ee68-88ad-4bae-b52a-b516d645a25e.png?resizew=168)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/5b55ee68-88ad-4bae-b52a-b516d645a25e.png?resizew=168)
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【推荐2】如图,
的半径为2,
,
是互相垂直的两条直径,点
是
上任意一点,过点
作
于点
,
于点
,点
是
的中点,当点
沿着圆周旋转
时
点所经过的路线长为:( )
![](https://img.xkw.com/dksih/QBM/2020/4/19/2445021137264640/2445581193035776/STEM/64cb6ca2282b4efdb1719e398d1378d6.png?resizew=156)
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![](https://img.xkw.com/dksih/QBM/2020/4/19/2445021137264640/2445581193035776/STEM/64cb6ca2282b4efdb1719e398d1378d6.png?resizew=156)
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