如图,已知平行六面体中,底面
是边长为1的菱形,
,
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5d7097c852a83e79453dd6fb244ac10.png)
22-23高二上·重庆九龙坡·期末 查看更多[6]
重庆实验外国语学校2022-2023学年高二上学期期末数学试题(已下线)第02讲 1.1.2空间向量的数量积运算(7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)(已下线)高二上学期第一次月考十八大题型归纳(拔尖篇)(1)(已下线)专题01空间向量及其运算(4个知识点8种题型3个易错点)(2)(已下线)专题02 空间向量的数量积运算6种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)(已下线)通关练01 空间向量的运算及应用11考点精练(3)
更新时间:2023-01-11 16:11:12
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【知识点】 空间向量数量积的应用
相似题推荐
解答题-证明题
|
适中
(0.65)
名校
【推荐1】如图,在四棱柱
中,侧棱
平面
,
,
,
,
,E为棱
的中点,M为棱
的中点.
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633bf2de732ae51fc06ef3d559915da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594bbb40a3dddaaf9ca6bb4c222b99e1.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图所示,已知
是△
所在平面外一点,
,
求证:
在面
上的射影
是△
的垂心.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1826268635201536/1826268635824128/STEM/61df6ecb8aec4a1eafe12e9dc9e9a5d9.png)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1826268635201536/1826268635824128/STEM/77c6f2490ec94f159b59580995fcdf7e.png)
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1826268635201536/1826268635824128/STEM/61df6ecb8aec4a1eafe12e9dc9e9a5d9.png)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1826268635201536/1826268635824128/STEM/a21decf80eb94e88be638db879911aeb.png)
![](https://img.xkw.com/dksih/QBM/2016/11/29/1826268635201536/1826268635824128/STEM/61df6ecb8aec4a1eafe12e9dc9e9a5d9.png)
![](https://img.xkw.com/dksih/QBM/2016/11/15/1836136225628160/1826268635824128/STEM/5e490876-bfc5-4f49-9cb9-bee758462548.png)
您最近一年使用:0次