解题方法
1 . 已知单位向量
,
的夹角为
,
,
.
(1)求
;
(2)求
与
的夹角.
![](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/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5e0c3d054939ae02fb12a31ef91293.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f994f2d6df63e2f4c199ba6fc63e18a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b6fbff85947f4df50ae1b17e967a158.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
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2 . 在
中
,
,
.
(1)求
;
(2)若
是边
的中点,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b3a17656628d97d6e1567c074ac14c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc0f23e79770ac886bf6c4f5937d0dc.png)
您最近一年使用:0次
解题方法
3 . 在平面内给定三个向量
,
,
,
.
(1)求满足
的实数
的值;
(2)若向量
满足
,求向量
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29b6b7f33003606c66bb6511fa8b0a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14dfa17632f933e0468b8a7864259517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7bc8d458d57e3721c6c30cb6570adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cef3d74d259abf0dfa856d3347a4fe3.png)
(1)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4a5e281f06621bd090489d10da41e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b76118bdca6c463cfb19b66f30281c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4dcd314cfa6147ea26ec8a679f134f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b76118bdca6c463cfb19b66f30281c4.png)
您最近一年使用:0次
名校
解题方法
4 . 在
中,角
、
、
的对边分别为
、
、
,
.
(1)求角
的大小;
(2)若
,
,求
.
![](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/84e9331a0aeb6be20548b99981a93c75.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d585633bffdf031ee5c67ec29f51667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81eedf404aeb0a2310a310910f73d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
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2023-11-13更新
|
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4卷引用:内蒙古自治区通辽市科尔沁左翼中旗实验高级中学2024届高三上学期12月月考数学(文)试题
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5 . 设向量
,.
(1)求证:
与
互相垂直;
(2)设
,若
与
垂直,求实数
的值;
(3)设
,当
取最小值时
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda8fffbec8bbb7e7ed35ebac0e305fb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed492f7b29166ba5c1f0023b05a439c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3143307ad0ba4a631eac04e814993655.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd9cf6452dfab1685efa81d08a3dd97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1520923edfa8df389811af06b1bdfa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968f96559fc6ff0459d6af4992e1bbf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad3a4a780058a662e53094557b28f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3a2a34b4317deffa40ba34e269c2b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd927b4b5a7875528c1b54aa4bb8b2dd.png)
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6 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac23b1d4633baaf2474431746f8f5201.png)
(1)求
;
(2)求
与
的夹角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac23b1d4633baaf2474431746f8f5201.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576536967639b1821f5e3b07be02c3ce.png)
(2)求
![](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/fa5301e013bcb05bbcce0ba5c8dfeb40.png)
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2023-12-14更新
|
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2卷引用:内蒙古巴彦淖尔市临河区第三中学2021-2022学年高三(体育班)上学期期末数学试题
名校
解题方法
7 . 已知平面向量,
,
,且
与
的夹角为
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e05250e283c6765cc1d5cbc630ac95a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a097c61adc353530dbffba673df62c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ab4ab6f038a9ee4283d34cb38b505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-12-14更新
|
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5卷引用:内蒙古巴彦淖尔市临河区第三中学2021-2022学年高三(计算机班)上学期期末数学试题
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解题方法
8 . 已知
,
,
.求:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29276b43a2950ed71f0f9629a35dfa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff265969988f1f138700129e5d7a6d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adebd7d8983b08857dc65e3a8057db1c.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854e16eb319ee454088f5b527cf6c4d5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93af88a7628c71d642d3a6df067c15f5.png)
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2023-07-21更新
|
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2卷引用:内蒙古乌兰浩特市第四中学2022-2023学年高一下学期第三次月考数学试题
9 . 已知平面向量
满足
,其中
.
(1)若
,求实数m的值;
(2)若
,求向量
与
的夹角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb371bd7728c6d6a16533a93924ad998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45dfa3afb4eb6bfc0c6b812ec0b8bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd9218a657b17654c5d757a6f7dee9a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03481e6a73207be03fdbc1f8e9965b37.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dced91de1b8c38aa95ffee0e5dc202.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4e49d17d4ad440d37c6f4bc8daba25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
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2023-06-16更新
|
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10 . 已知边长为1的正方形ABCD中,AB与x轴正半轴成30°角.求点B和点D的坐标和
与
的坐标及点C的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a7f07db2ec637baadf8f0ab91c85c.png)
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2023-06-15更新
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