名校
1 . 已知单位向量
,
,的夹角为
,向量
,向量
.
(1)若
,求
的值;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b28baf17059c56ee9ad1ae4814acd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b04618e5b2db68f2de6ba68972c505c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bf9289a7e68905cea8ec70ce313dd82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fab1a8e4f1154ef109f11513b78364c.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069da5c624837df29947b7b8bf722097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdd77301bc7551f074cb148830fc171.png)
您最近一年使用:0次
2020-08-03更新
|
877次组卷
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6卷引用:辽宁省辽阳市2019-2020学年高一(下)期末数学试题
辽宁省辽阳市2019-2020学年高一(下)期末数学试题陕西省商洛市2019-2020学年高一下学期期末数学试题(已下线)练习17+平面向量综合练习-2020-2021学年【补习教材·寒假作业】高一数学(苏教版)广西桂林市逸仙中学2021-2022学年高一下学期期中考试数学试题江苏省宿迁市第一中学2022-2023学年高一下学期3月阶段模拟数学试题江苏省镇江市扬中市第二高级中学2022-2023学年高一下学期期中数学试题
名校
2 . 若
、
是两个不共线的非零向量,
(1)若
与
起点相同,则实数t为何值时,
三个向量的终点A,B,C在一直线上?
(2)若
,且
与
夹角为60°,则实数t为何值时,
的值最小?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(1)若
![](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/22ad1cb3d16b891c1728b7e9e6357e75.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e9616e55c8107822a14b0c9be94497.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/c8d31bb30d0aada34b929fd8f392b3e9.png)
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2020-01-14更新
|
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5卷引用:第八章 向量的数量积与三角恒等变换 单元检测卷