如图,已知有两个以
为圆心的同心圆,小圆的半径为1,大圆的半径为2,点
为小圆上的动点,点
是大圆上的两个动点,且
,则
的最大值是______ .
![](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/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99066713c8311798f581acdef37511e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3b087875ad7156963406bf36c70c126.png)
![](https://img.xkw.com/dksih/QBM/2021/1/12/2634689849024512/2635299210690560/STEM/21e3782cde6e4dd98a2f24a8a5efc574.png?resizew=128)
2020·全国·模拟预测 查看更多[1]
(已下线)2021年浙江省高中名校名师原创预测卷数学(第二模拟)
更新时间:2021-01-13 16:32:52
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填空题-单空题
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适中
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解题方法
【推荐1】已知三角形
的斜二侧画法的直观图是边长为2的正三角形
(如图所示),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dd315a4f697285399eb924e7736116.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1264a2e3609e1c274acb89b5ea5019.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9dd315a4f697285399eb924e7736116.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/19/55a4012b-2a13-4f6a-8b16-7814d8a5821f.png?resizew=161)
您最近一年使用:0次
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适中
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【推荐2】
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17413ca9b1286ed354edc6c20ba09a2b.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04c2499020f5de4e68d493c4cad02d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b53f3869ee83375e6408ef94e109fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2df8eeaa77663dd771dfe2712e2fc0aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17413ca9b1286ed354edc6c20ba09a2b.png)
您最近一年使用:0次
填空题-单空题
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适中
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名校
解题方法
【推荐1】已知
,
,
与
的夹角为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a560b8ff794c12dc8d194bcd2e3f3554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7b07b758ce14f21bda78c11b387fe6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e58a05e484b765249f7cbc8ba623b15.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4ff655de43e2bfea4ed9ae34e36de0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a560b8ff794c12dc8d194bcd2e3f3554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
您最近一年使用:0次
填空题-单空题
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适中
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【推荐2】已知
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______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fa2fcefaf3d8868da0cb52877c5247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281238da5a4f60da47ded9f39964f1b2.png)
您最近一年使用:0次
填空题-单空题
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适中
(0.65)
名校
【推荐1】在△ABC中,已知AB3,O为△ABC的外心,且
1,则AC______.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b34d68f33dbac5ff50f4a1e3420452.png)
您最近一年使用:0次
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解题方法
【推荐2】平行四边形
中,
,E是
的中点,F是
的中点,则向量
的模长是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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