解题方法
1 . 已知
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a820047334d2482e3521f8b33a8b002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abeb1bbd1d18d3631152eff6b0fd0af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
您最近一年使用:0次
名校
2 . 已知向量
,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7612eaf3d84374f6175aa150a1fe93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba87515ee89496c7c9d7c7ff5b9ccdee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-15更新
|
533次组卷
|
5卷引用:广东省中山市华侨中学2023-2024学年高二上学期第二次段考(期中)数学试题
广东省中山市华侨中学2023-2024学年高二上学期第二次段考(期中)数学试题广东省茂名市高州中学2023-2024学年高一下学期期中考试数学试题(创新班1-3班)(已下线)模块五 专题2 全真基础模拟2(苏教版高二期中研习)(已下线)高二 模块3 专题1 第2套 小题进阶提升练(苏教版)(已下线)专题01 空间向量表示及运算--高二期末考点大串讲(苏教版2019选择性必修第二册)
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3 . 已知直线
的方向向量为
,平面
的法向量为
,且
,那么![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e2f6a86f1bed6d8af6080b2b0a4ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b308f205139cbe0829f9bd58e3f2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daac3b69009a27d28fa04fd88c9bb102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
解题方法
4 . 在如图所示的试验装置中,四边形框架
为正方形,
为矩形,
,且它们所在的平面互相垂直,
为对角线
的中点,活动弹子
在正方形对角线
上移动.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/e6385f05-9cbc-44ff-88ac-f078bebf1c40.png?resizew=163)
(1)若
,求
的值;
(2)当
为
的中点时,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20acf562ef2fbe5f10e6e1a2d3f0fdd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/5/e6385f05-9cbc-44ff-88ac-f078bebf1c40.png?resizew=163)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65cb17d27559c1179bce031cbeeb0636.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7c9055d30aa0bcd1a1519efb2d4b1f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82cb18c10820d927ecd53326f58aaf8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee5a94f9063a71581f409e47ebaf602.png)
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2023·全国·模拟预测
5 . 如图,在梯形ABCD中,
,
,
,
,将
沿AC折起,使点D到达点P位置,此时二面角
为
,连接PB,得到三棱锥
,则该三棱锥外接球的表面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae2a696b84492a736c5b444e61b7ad96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ff6d7dd48b57f03d82d2c522ee9b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf29d07c3751c41ab3503065a5a5052e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231b861d6d1f1d0b9f52b041cb40eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
您最近一年使用:0次
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6 . 已知
,
,
,设
,
,
.
(1)判断
的形状;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cceb595f1a2a9d1affa28eb40224b425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43afb1efd948342560d0ead9bd13b68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c865f470fe02a1cd5cccc72b8257f3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23adb3fa3a098da1a12ed22472d0697c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7894a1a495d4fa4d7959d94a97dabc55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56102893dd74583c1ad8342da46011b5.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce4f642d314962a5e542ef14bc89cd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
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7 . 已知向量
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c06324bd755f80e509c6a2c60408432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8953ac7d6733f0018de37d600e2646d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4566d8b80f6e87ab3f7032f9c4ebda1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
A.![]() | B.2 | C.![]() | D.1 |
您最近一年使用:0次
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8 . 长方体
中,向量
在基底
的坐标为
,则向量
在基底
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28586f265b289de43a1b3dcb6f78a8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9792e37a18cb1ba146a25d05371670c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae98586d80f892771c90ab39eaced90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c8d2b8d910cbf3dc88a73bacb3a13ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-08更新
|
253次组卷
|
3卷引用:广东省惠州市大亚湾区第一中学2023-2024学年高二上学期期中检测数学试卷
名校
9 . 已知
,
,且
,则x的值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/565dc1779976c62114cf77fa65a72c1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657cd101806664450cfe477558b14bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
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2023-12-01更新
|
405次组卷
|
4卷引用:广东省江门市台山市第一中学2023-2024学年高二上学期期中考试数学试题
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10 . 已知
,则
在
上的投影向量的坐标为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb94c49d56c98cd9b2fbaa089a44bdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2023-11-22更新
|
643次组卷
|
6卷引用:广东省广州中学2023-2024学年高二上学期期中数学试题