等腰直角三角形ABC的直角顶点A在x轴的正半轴上,点B在y轴的正半轴上,点C在第一象限,且O为坐标原点,若
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236f52e04ddbd7253f44b97c4756ef9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b231f1bfbe93ea336735572963a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3684f393ae4ab4d534b75866941accac.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2023-04-27 18:26:12
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【推荐2】如图,圆
的半径为1,
是圆上的定点,
是圆上的动点,角
的始边为射线
,终边为射线
,过点
作直线
的垂线,垂足为
.将点
到直线
的距离表示成
的函数
,则
在
的图象大致为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/20/7adc116c-38f1-42a0-b411-b7795c58be05.png?resizew=131)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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解题方法
【推荐2】已知
,
满足
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1cdd0607a41b303860d4750095dce80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e148c303e5fb81475da429af38abf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1127ea737e6e3009e6fa87e17b2ed3e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34224b33b90a9466d29c571d52bb165a.png)
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您最近一年使用:0次
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【推荐1】在四边形
中,
,
,
,
,
,点
在线段
的延长线上,且
,点
在边
所在直线上,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecf7679c8b4b1e442ce4286d4b0e9c32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c45087cde2d66377517a3fce5553b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
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解题方法
【推荐2】如图,设
是平面内相交成
的两条数轴,
分别是与
轴,
轴正方向同向的单位向量,若向量
,则把有序数对
叫做向量
在坐标系
中的坐标,记作
.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1926b0c74f8b4234a8dce685dc134c9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d532c22c451ae160f09ea91d1b116d87.png)
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46c092d69df76faf1e2133dc96b466ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10814bc3db929e79874befe96cf4e3d4.png)
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