名校
解题方法
1 . 若平面向量
两两夹角相等且
,写出
的一个可能值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2928d1d80341e60df10c254363ddf4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf4c9956c7ec8ed4ee135b34216cbb6.png)
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名校
解题方法
2 . 已知
,
是两个单位向量,若
在
上的投影向量为
,则
与
的夹角为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c86779e465e98e32df7e1de20a0a87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
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名校
解题方法
3 . 在
中,
,点D在线段
上,
,
,
,点M是
外接圆上任意一点,则
最大值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037b342a682cbd4241855a243da3c016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd2a2a843ec6b1973068444b19b0616.png)
您最近一年使用:0次
2024-06-13更新
|
207次组卷
|
2卷引用:湖北省襄阳市第四中学2024届高三下学期高考最后一次数学测试题
解题方法
4 . 如图,在
中,
分别是边AB,AC上的点,
,且
,点
是线段DE的中点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080881113dcfedbb37be834669306a05.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab2284d326527ac5b6829c71a7b9e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64ba1954221a03cd62f691aaa6f798fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8908d9e34f06b6a3509a1d8e999d5ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080881113dcfedbb37be834669306a05.png)
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解题方法
5 . 如图,已知
的半径为2,弦AB的长度为3,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df672afc662c02d3c381cbab21b34611.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df672afc662c02d3c381cbab21b34611.png)
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名校
解题方法
6 . 已知平面非零向量
和单位向量
,若
与
的夹角为
与
的夹角为
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc64abe49847ade9b78678ba1f8e0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a6a5c98d78050766cfbc8214179e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fb0321db0676af22be95f8a9cc9b38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576536967639b1821f5e3b07be02c3ce.png)
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2024-05-07更新
|
547次组卷
|
2卷引用:湖北省武汉市华中师范大学第一附属中学2023-2024学年高一下学期4月期中检测数学试题
名校
解题方法
7 . 太极图被称为“中华第一图”,其形状如阴阳两鱼互抱在一起,因而又被称为“阴阳鱼太极图”.如图所示的图形是由半径为2的大圆
和两个对称的半圆弧组成的,线段
过点
且两端点
分别在两个半圆弧上,
是大圆上一动点,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d8eb37a4dd75318dcbd836395e575bd.png)
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2024-04-24更新
|
1807次组卷
|
3卷引用:湖北省黄冈市浠水县第一中学2024届高三下学期第三次高考模拟数学试题
8 . 已知平面向量
,
,
,若存在平面向量
,
,使得
,则
的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7f14dfa9f463d57664c640102bb5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b8947476feba834a361ae8ae518136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa363070e9ec729ceb37e480e3552836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79d0d8f3a36fe5b832f6afcc4a02e18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8798a9ef31a0571814a55dc6cf4de36.png)
您最近一年使用:0次
名校
解题方法
9 . 在
中,
,O是
的外心,
,则
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05740f0c6071846227dc0ec177ad15e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed56b815a334a15d0fb81c185a17cde7.png)
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2024-04-20更新
|
557次组卷
|
2卷引用:湖北省部分学校2023-2024学年高一下学期4月期中考试数学试题
10 . 已知向量
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a347445298b7404e5fc47a42f5a6dd49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3c6bd21d9c27a68b970f446f04d6df.png)
您最近一年使用:0次
2024-04-18更新
|
974次组卷
|
2卷引用:湖北省武汉市部分重点中学2023-2024学年高一下学期4月期中联考数学试题