如图,O为坐标原点,四边形OACB是菱形,OB在x轴的正半轴上,sin∠AOB=
,反比例函数y=
在第一象限内的图像经过点A,与BC交于点F,则点F的坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/b69c5e0f-dff1-45f6-960a-ac7affcfed47.png?resizew=220)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732daf30adda72be89586c48244bbaa5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/b69c5e0f-dff1-45f6-960a-ac7affcfed47.png?resizew=220)
A.(![]() ![]() | B.(![]() ![]() |
C.(![]() ![]() | D.(![]() ![]() |
2021·山东滨州·一模 查看更多[1]
更新时间:2022-03-15 10:52:57
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【推荐1】如图,反比例函数
的图象经过等腰直角三角形的顶点
和顶点
,反比例函数
的图象经过等腰直角三角形的顶点
,
,
边交
轴于点
,若
,
点的纵坐标为1,则
的值是( )
![](https://img.xkw.com/dksih/QBM/2020/10/27/2580296782397440/2610709379579904/STEM/c791e12a-f60c-46e6-92ab-3cec49f59b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c8dfd715ca855ca397af036825c9b2.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://img.xkw.com/dksih/QBM/2020/10/27/2580296782397440/2610709379579904/STEM/c791e12a-f60c-46e6-92ab-3cec49f59b89.png)
A.![]() | B.![]() | C.![]() | D.-6 |
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【推荐2】如图,点A的坐标是(-4,0),C为OB的中点,将△ABC绕点B逆时针旋转
后得到△
.若反比例函数
的图象恰好经过
的中点D,则点B的坐标是( )
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897107421569024/2973587285729280/STEM/dcdd562c-6100-4c57-b31e-d7c9e74a53cc.png?resizew=195)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c11e6ad8f80597c56370bef90cfe155.png)
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A.(0,6) | B.(0,8) | C.(0,10) | D.(0,12) |
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解题方法
【推荐1】如图,在矩形
中,
,
,点
在边
上,且
.连接
,将
沿
折叠,若点
的对应点
落在矩形
的边上,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/4a827410-6040-4a11-89c2-a20564b45079.png?resizew=154)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d76f6a8448fa8bf90b93c51c0c09004f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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【推荐2】如图,六边形
是正六边形,点
是边
的中点,
分别与
交于点
,则
四边形MCDN的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在平面直角坐标系中,
OAB的边OA在
轴上,
OAB的两条中线OC与AD交于点M,反比例函数
的图像经过点M.若OA=8,tan∠AOC=
,四边形BDMC的面积为6,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/3/4794d242-b843-4fd6-a42a-604efc22bc0e.png?resizew=298)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐2】如图,▱ABCO的顶点B、C在第二象限,点A(﹣3,0),反比例函数y=
(k<0)图象经过点C和AB边的中点D,若∠B=α,则k的值为( )
![](https://img.xkw.com/dksih/QBM/2019/4/2/2173701556027392/2177176427503616/STEM/c07f315513514c0fa60afdff3799e976.png?resizew=167)
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A.﹣4tanα | B.﹣2sinα | C.﹣4cosα | D.﹣2tanα |
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