如图,
⊥
,
⊥
,
⊥
,
,
分别是
的中点,
分别是
的中点,证明:
⊥
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5969d2c05955f48cd5b3b65629ad5151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2013303974d530fce9a9930938f4c2b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/16/0cb92a8e-69a6-494a-9fab-fc5108a2b1fd.png?resizew=171)
2024高二·全国·专题练习 查看更多[1]
(已下线)专题03空间向量及其运算的坐标表示(5个知识点4种题型1个易错点)(2)
更新时间:2024-02-16 12:29:33
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相似题推荐
解答题-问答题
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【推荐1】如图,已知平行六面体
中,底面ABCD是边长为1的正方形,
,
,设
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/4166ccdf-967b-4a0b-933a-1a79fe6c2286.png?resizew=155)
(1)用
,
,
表示
,并求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ecbca919bff5a39a99dd7f867dd61f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7a93a1399ff7a2bde342652479241b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b54aa2b7f9adf409f0ce8e00615432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a75216f7a68428fb8dd41221e854117.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/4166ccdf-967b-4a0b-933a-1a79fe6c2286.png?resizew=155)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e650df8a77daeaa4b8eb3476c35317f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd540f04f6fcf540e6d45d0ed2cc201a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144dd644f6522d5a08515bf767ec2ead.png)
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解题方法
【推荐2】如图,在棱长为1的正方体
中,M为棱
上任意一点.试确定向量
在平面
上的投影向量,并求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6d728b430549f00bb9c0a7bf8bf7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c87a02a2002c33e7f285727c8da8efe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/10/9dedf057-e1cf-4a97-8db1-1a504d1177e0.png?resizew=141)
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【推荐1】在四面体OABC中,E,F,G,H分别是OA,AB,BC,OC的中点.
(1)用
表示
;
(2)用向量方法证明:E,F,G,H四点共面
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/21e3fd52-0bb0-4167-a3b0-e91f7532bca2.png?resizew=200)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4b2ab5f22cd36f0045a22584f436d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b217b80be94d29bb07778b7eac5344a6.png)
(2)用向量方法证明:E,F,G,H四点共面
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【推荐2】如图,在空间直角坐标系
中有一长方体
,且
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6c50406443d358154024db3bb7eb36.png)
![](https://img.xkw.com/dksih/QBM/2022/9/2/3057810638389248/3057929033998336/STEM/27e51a5025974def89ba6f69dc5a7ea5.png?resizew=235)
(1)写出点
的坐标,并将
用标准正交基
表示;
(2)求
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94fd432df8731b054aa87095b802ab4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/434845564fd5765244f8d1aa9240fa39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26ea9e9e42ced4f9b7540b368fbd171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6c50406443d358154024db3bb7eb36.png)
![](https://img.xkw.com/dksih/QBM/2022/9/2/3057810638389248/3057929033998336/STEM/27e51a5025974def89ba6f69dc5a7ea5.png?resizew=235)
(1)写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9022ae6e2fd489dfb95870b4521a5220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b87d48fe1d1c0dddd9f484ab1a9dfb85.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1028772e9586d4963e13bee057d50c04.png)
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解题方法
【推荐1】在如图所示的几何体中,四边形
是正方形,四边形
是梯形,
,
,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505229809278976/2506006876479488/STEM/b2a734694de7432b9230fea985c58e0c.png?resizew=188)
(1)求证:
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7bce6eba5d07a34f24c5370c580ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db13e8affea90632f591077308119cef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3025e649f4d4bc6bbda122f940cf8a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c032261d2f887de100ed40e8fc676e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ea2d880b20542c2d813f95c683403e.png)
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505229809278976/2506006876479488/STEM/b2a734694de7432b9230fea985c58e0c.png?resizew=188)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c0f6b53de48e0f7a09419886276ccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e738d31d5d2d20134ed862d404f3fb5d.png)
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解题方法
【推荐2】如图,在三棱锥
中,
平面
,
,
、
、
分别为棱
、
、
的中点,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
(1)求证:
;
(2)求直线
与平面
所成角正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/883fc5e3faf39829d60804b59deb1730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://img.xkw.com/dksih/QBM/2012/2/1/1570707204964352/1570707210272768/STEM/828404ba-9e75-4aca-b52f-d0e7c42b5217.png?resizew=189)
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