1 . 如图,在平行六面体
中,
,
,
,点
在
上,且
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/5200960a-20d4-4c80-a04e-428f6b335457.png?resizew=176)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbcb8b7332b9f1e41223c6689d05a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a4e7a88f8e2c39b557f03461ba22cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c696e98bcf2820d230eef16f280f401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a88a7612b4d8b2366aed66729ae6890.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e9c6b249810d08cb9531e701f058b0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/18/5200960a-20d4-4c80-a04e-428f6b335457.png?resizew=176)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-11-21更新
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4卷引用:北京市朝阳区东北师范大学附属中学朝阳学校2023-2024学年高二上学期期中学习质量监测与反馈数学试卷
北京市朝阳区东北师范大学附属中学朝阳学校2023-2024学年高二上学期期中学习质量监测与反馈数学试卷(已下线)专题01 用基向量表示指定向量的方法(期末选择题1)-2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)青海省西宁市部分学校2023-2024学年高二上学期期末联考数学试题(已下线)6.2 空间向量的坐标表示(1)
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2 . 如图,四棱锥
的底面是平行四边形,若
,
,
,
是
的中点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79cbea5ead335c45b6c2974e718f30c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0051869b7765cc6c26fee0ff9ed8547a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0250e05b5e6c038633c8ab1f1eb1dfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9769839f35c2b7002b9f5e62f40b34de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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|
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4卷引用:北京市顺义区第九中学2023-2024学年高二上学期期中考试数学试卷
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3 . 如图,四面体
的所有棱长都是2,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/c94b64fa-d148-45e7-8bf1-608b1e2a5565.png?resizew=180)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7590a22611f3935d8e32eac956c2a4c1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/c94b64fa-d148-45e7-8bf1-608b1e2a5565.png?resizew=180)
A.![]() | B.![]() | C.2 | D.1 |
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2023-11-19更新
|
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4 . 已知空间向量
,则向量
与
的夹角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b76326a750cbe87509eee8d2b7c2203f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 在空间直角坐标系
中,已知
,
,其中
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5db2cc7fb0042cfd92f8c1f6046017d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c9f7cbfa9c4fed1d29cb944daaa3b55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338ac09ffd9addc3dadf363152c3e39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7d8b42c85013ba07ba18e5e46d8716.png)
A.3 | B.![]() | C.![]() | D.4 |
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解题方法
6 . 已知直线m,n的方向向量分别为
,
,则直线m,n夹角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3475d6a1cb27cf459b96c2875aad60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e9b74ea8b9b62ee7c0f17a8b242ad0.png)
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7 . 设向量
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3351eb427d79ac61a2c7f45672b6d44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf21fef3026cfe445a855c94cab5c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.![]() | B.![]() | C.1 | D.2 |
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|
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4卷引用:北京市丰台区怡海中学2023-2024学年高二上学期12月月考数学试题
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8 . 若
,
,
与
的夹角为
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dd065084d1e290756d8e35ed6573185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b19d314545a0e8bd4c868a06a32bdc35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.5 | B.4 | C.![]() | D.0 |
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解题方法
9 . 已知函数
的部分图象如图1所示,A,B分别为图象的最高点和最低点,过A作x轴的垂线,交x轴于点
,点C为该部分图象与x轴的交点.将绘有该图象的纸片沿x轴折成直二面角,如图2所示,给出下列四个结论:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/8e2738bb-50bd-4451-9836-f1e8fd605a74.png?resizew=161)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/7bc18b7f-2cf8-40a7-98b4-b6ec9b7dd4f1.png?resizew=260)
图1 图2
①
;②图2中,
;③图2中,过线段AB的中点且与AB垂直的平面与x轴交于点C;④图2中,S是
及其内部的点构成的集合.设集合
,则T表示的区域的面积大于
.其中所有正确结论的序号是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e1efd63f3476fdab4dd04d0ee34ddec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/8e2738bb-50bd-4451-9836-f1e8fd605a74.png?resizew=161)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/17/7bc18b7f-2cf8-40a7-98b4-b6ec9b7dd4f1.png?resizew=260)
图1 图2
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d47dbed3333b180fce58a6d9e440f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d363758a1cc53a47db20561e40638692.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2df93bd15f25096c510b589aad0dfc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920548c598eaa687886c485c07b249df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e24f048f9a87274863ba2c037d7a5c.png)
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解题方法
10 . 设
分别是空间两直线
的方向向量,则直线
所成角的大小为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/441a2663e62988bf79b16fa9f1104075.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
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