如图,已知边长为
的正方形
中,点
在以
为直径的
的圆周上运动.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/d8c3f980-2330-4baf-afba-ecdcae109223.png?resizew=127)
(1)当
、
、
三点共线时,求
的值;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/15/d8c3f980-2330-4baf-afba-ecdcae109223.png?resizew=127)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ccdb4320b22830e160281b6a5925c0.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa7a97fa8ede93f69db2e626836d1e0.png)
更新时间:2022-10-11 09:39:33
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】如图,在直角坐标平面
内已知定点
,动点
在
轴上运动,过点
作
交
轴于点
,使得
,延长
到点
,使得![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f3e80860ae3e525ac09511e87c7679.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/091b2e9a-3245-40e8-8c27-a505c2725c65.png?resizew=149)
(1)当
时,求
;
(2)求点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e48f79069ada435c8225a124f149c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74f3e80860ae3e525ac09511e87c7679.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/091b2e9a-3245-40e8-8c27-a505c2725c65.png?resizew=149)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0276eaee8477f3fe6dc2cba1152445df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918fd965d125b680f04944deb2731a0d.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】在
中,三个内角
所对的边分别为
,满足
.
(1) 求角
的大小;
(2) 若
,求
,
的值.(其中
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc9ec1ea38336f3f7be949cc5c17c55.png)
(1) 求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b74e120ac67183f3ebe514b22aecefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8e2b380189700530b3352b501c532d.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】选修4-4:坐标系与参数方程
在平面直角坐标系
中,以
为极点,
轴正半轴为极轴建立极坐标系,直线
的参数方程为
(t为参数),曲线
的极坐标方程为
.
(1)写出直线
的直角坐标方程和曲线
的普通方程;
(2)求直线
与曲线
的交点的直角坐标.
在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d000ac80976e9c71c2fb2cbf664187c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e0cb878349009a779d94b1bc40319bb.png)
(1)写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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解答题-证明题
|
适中
(0.65)
【推荐2】设
,
是平面上两点,则满足
(其中
为常数,
且
)的点
的轨迹是一个圆,这个轨迹最先由古希腊数学家阿波罗尼斯发现,故称阿波罗尼斯圆,简称阿氏圆,已知
,
,且
.
(1)求点
所在圆
的方程.
(2)已知圆
与
轴交于
,
两点(点
在点
的左边),斜率不为0的直线
过点
且与圆
交于
,
两点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73d6ad2bd022a9a78f683cf20f98529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2c80c26a794a844127aae7dee87c93b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c525393775354325cbf7839366ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb4e996beb1cf6c93f9d951b0586b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2530e53439bd7e54d7475807d4b434d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc66cd5ccd5a579a42c6a241c62d764.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)已知圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cdf5405e4c1e85aa0538f330a44e975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26212e592aba3723b57cf0ccfd28a20.png)
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