已知:如图,第一象限内的点A,B在反比例函数的图象上,点C在y轴上,BC∥x轴,点A的坐标为(2,4),且tan∠ACB=![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
求:(1)反比例函数的解析式;
(2)点C的坐标;
(3)∠ABC的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/103070abee09399f1e9510a75c3ba9e8.png)
求:(1)反比例函数的解析式;
(2)点C的坐标;
(3)∠ABC的余弦值.
![](https://img.xkw.com/dksih/QBM/2017/4/19/1668989189332992/1669212007104512/STEM/cc4865b6e36047c6b034711b3e7cd2e1.png?resizew=188)
更新时间:2017-04-19 18:03:25
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解答题-问答题
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适中
(0.65)
【推荐1】如图,已知反比例函数
和正比例函数
的图象相交于点
和点B两点.
(2)求反比例函数的解析式;
(3)点C在x轴上,
的面积为12,求点C的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9143762193811f6a9fa8c15c8bbd90.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd970bc9a86bb8163c3937afe28128b.png)
(2)求反比例函数的解析式;
(3)点C在x轴上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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适中
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【推荐2】如图,直线
与双曲线
交于点A、E,AB交双曲线于另一点B(
,
),连接EB并延长交x轴于点F.
(1)
;
(2)求直线AB的解析式;
(3)求△EOF的面积;
(4)若点P为坐标平面内一点,且以A,B,E,P为顶点的四边形是平行四边形,请直接写出点P的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c5dbbd1a7f9932567099ee67f2443f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad491e5b5e14c49ef8b7004ebcfcef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
(2)求直线AB的解析式;
(3)求△EOF的面积;
(4)若点P为坐标平面内一点,且以A,B,E,P为顶点的四边形是平行四边形,请直接写出点P的坐标.
![](https://img.xkw.com/dksih/QBM/2019/4/24/2189420384411648/2190670505918464/STEM/2cffcf7967ae4c83b4bc377ab56bd5db.png?resizew=156)
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解答题-问答题
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(0.65)
【推荐1】若点
在四边形
内部,且点
到四边形的一条边的两个端点距离相等时,称点
为该边的“等距点”.例如:如图1,点
在四边形
内部,且
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为边
的“等距点”.
(1)如图1,四边形
中,
于点
,求证:点
是边
的“等距点”.
(2)如图2,点
是矩形
边
的“等距点”,
.
①当
时,请求出
的值;
②设
分别为
,试求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/a81efbcb-d781-492a-9cec-3ca384d92400.png?resizew=281)
(1)如图1,四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99f724bb3614b40d63b284abaa7993f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/573a06f044e8f251a60519b186dc59d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8267a8bfd73881a4bb24de2fc69f74.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4979e52d6e2c3527ff8c91f95bc9b594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9f0e1ab07a1921387d5a8a4d1878fb.png)
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解答题-作图题
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适中
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【推荐2】请按以下要求用无刻度直尺作图:
和线段
关于点M成中心对称,画出点M;
(2)如图2,将
绕点O逆时针旋转90°得
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(3)如图3,设
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绕点C顺时针旋转
得
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
(2)如图2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4310db23fc79936c7182361e652bab1a.png)
(3)如图3,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2cf0e95fdf1fd8a5b01d3dfd905e08.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b185184dc2dc3894a0313fd13f26a59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b185184dc2dc3894a0313fd13f26a59.png)
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