23-24高一下·上海·期末
解题方法
1 .
三内角
,
,
所对边的长分别为
,
,
,设向量
,
,若
,则角
的大小为 ______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090904da70d76c97b787bc44948f215d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6107483a497c9ee9e2d4ac298ec0a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb83fac351156d4447cdca7cbd07c194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2 . 已知向量
,
,
.
(1)若向量
与
垂直,求实数
的值;
(2)若向量
,且
与向量
平行,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b1430051e50ebe7f433fe6207432ae9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8efa0bd48da7b3c6b5b0d7240a18deeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9de4d4d35b001ce0e27deb3483deae8.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d99ca961e755fcb6613702169f202d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2db3b9b5b833ffc875bfc5aae4c9e454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e163480714acc9dae5005cac65d217d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b581e648ee722b5beb3d97128aff8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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3 . 已知向量
,
.下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b981b38133d5d65060dd8ff4d65a66be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e383d576da2ca0c9e833d9d362929d.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若向量![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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解题方法
4 . 已知向量
,若
与
共线,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b6a4ac5fce00cf467fe9ab8496f133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e49d17d4ad440d37c6f4bc8daba25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b83c5803cc8c05849028a57c4bd4ee72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
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5 . 已知
,
,若向量
的夹角为钝角,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0999d0e0e9e22f106ef579843f87188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c3130741493cd8f2d243375c8afdeca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b172cf8d898883d82e973f28c3c3a3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-06-03更新
|
639次组卷
|
2卷引用:广东省东莞市东莞中学2023-2024学年高一下学期第一次段考数学试题
名校
6 . 已知向量
,向量
与
为同向向量,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8d99b80103afd75127b08d10f72fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2eedb5bb464c0aac6ece6acd404b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55e3aae38a719cdc48e357cc0dfd927b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9d721c82360be2ab3d462b4023bb9d6.png)
A.2 | B.3 | C.4 | D.5 |
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解题方法
7 . 已知向量
.
(1)若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
,求
的值.
(2)设
,向量
与
的夹角为
.
①求
的大小;
②在
中,
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a6ae5f84cfadffd95975d26ee52ee1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1c8feca6e03d79ad46b8e7ecc524f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1279b1aa81de4ac92b57f81e79e162db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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8 . 已知向量
,
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cb08339c7bc96709c2911862a782fde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ce3d2de2330af855d340e0674a0b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076559f08d17fb25e82886e791719e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d33ee1f52775bf9ba66e0fdf0ecbb35.png)
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解题方法
9 . 已知
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aab59a34fc8e9efc023657f1374a1dc.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd13debe7b285b22bfed2ce69115134b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a4e9626b27d276bd2f1892354421b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aab59a34fc8e9efc023657f1374a1dc.png)
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2024高一·全国·专题练习
解题方法
10 . 已知
,
,分别确定实数
的取值范围,使得:
(1)
与
的夹角为直角;
(2)
与
的夹角为钝角;
(3)
与
的夹角为锐角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81f4dcf415977dea53f52a85b6b82136.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1ad72d16dc0f25f24bbd587a26ebd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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