如图,已知正六边形
的边长为4,对称中心为O,以O为圆心作半径为2的圆,点M为圆O上任意一点,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/285250fe6d502398ca29b81dd6544d9d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2024·广东茂名·模拟预测 查看更多[2]
更新时间:2024-05-19 12:36:16
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【推荐1】定义
.若向量
,向量
为单位向量,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10bbbb610020a2eb32b97723f7b0b35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1c7c662ddd89c6933a7ef833c2d461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee437e6ff470c2f67b8429f57b90ae37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/516834df4d567c6d385afd6b44860ebc.png)
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【推荐2】已知平面上两个定点
,
的距离为2,点
是单位圆
上一动点,若
,则满足条件的点
的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](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/a52c1a3e5207f9e3f74d34b8811286c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐1】如图,
是圆
的一条直径,且
.
、
是圆
上的任意两点,
,点
在线段
上,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57dfc9d1109fe41145cc892b5702d9fb.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb56c6014dc67243592fa32a141b8664.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59880e470359d8e9faf6ae5ce155cf2a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/4a7c8aa0-5ab1-4d74-9c22-359e247226a5.png?resizew=163)
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【推荐2】如图,矩形
内放置5个边长均为1的小正方形,其中
,
,
,
在矩形的边上,且
为
的中点,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/c2556dbb-7f3e-4d2b-86d9-72a6bf396269.png?resizew=128)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dcac283534a5a9759af1c23e58bdda0.png)
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf56d82c957c78475b4a6f1fe6ec7eb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/c2556dbb-7f3e-4d2b-86d9-72a6bf396269.png?resizew=128)
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