如图,在平行六面体
中,点M是线段
的中点,点N在线段
上,且
,
.
(1)求满足
的实数x,y,z的值.
(2)求MN的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50c9d6c9cb1d4578bc34fe57b309dc43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f012df51756c02a32aaa3b26e75c06ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/9/ed72f88e-d824-4487-84e8-5254de1d8c13.png?resizew=201)
(1)求满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca2a65825b38497d059d72473d16d911.png)
(2)求MN的长.
22-23高二上·广东佛山·期中 查看更多[6]
广东省佛山市顺德区卓越高中2022-2023学年高二上学期期中联考数学试题广东省佛山市南海区南海中学分校2023-2024学年高二上学期10月阶段性测试数学试题(已下线)专题 01 空间基底及综合应用(3)(已下线)专题 01 空间基底及综合应用(2)(已下线)专题02 空间向量基本定理及其坐标表示压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)(已下线)第七章 应用空间向量解立体几何问题拓展 专题一 空间向量基底法 微点3 空间向量基底法(三)【基础版】
更新时间:2023-08-07 23:44:04
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,在四棱锥
中,底面
为正方形,平面
平面
,
,点
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/ec7c89c0-e5ca-4af2-a5d3-199ed0fc6ff1.png?resizew=189)
(1)求证:
;
(2)若
,求平面
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e85c423fce51e48617382a3abbca40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac4ee9a98647379757a6f643fb73438.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/11/ec7c89c0-e5ca-4af2-a5d3-199ed0fc6ff1.png?resizew=189)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efbae661c332b33d48a9dcde4790d938.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc461ecaceb4374b4628f95081c3b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/437bc0b5b7815c77b4956f194fc6ef52.png)
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解答题-问答题
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适中
(0.65)
【推荐2】如图所示,在三棱锥
中,
,
,
两两垂直,
,
,
,
,
,
分别为
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,
的中点,以
,
,
方向上的单位向量为基底,求
.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
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名校
解题方法
【推荐1】如图,长方体
中,以D为原点建立空间直角坐标系,已知
,且
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与
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a120af52c52647a39e3a895e0d3b27b1.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/1f9a9c6d-fa13-4384-adcf-286348950126.png?resizew=159)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】如图,在平行六面体
中,
,
,
,
,
,
,
与
相交于点
.
(1)求
;
(2)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c413174ea856822c5e23bd85eb4893e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe2ed70f81d66c750006e0292de8dcb.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/15ef6de3-7249-4fd4-b960-4ed9b926be60.png?resizew=187)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8bad16b7cdf8c638cd324f5be5d834f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dc526324e78e4d9226d1b537f27845a.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】如图,正方体
中,O为
上一点,且
,BD与AC交于点M.求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f097682a53939c386fa10079d17e6216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d0f96f92f7da092ace7ec04024bd88.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/8/5503a94c-8715-490e-839f-59eea9597fe5.png?resizew=165)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
【推荐2】如图,在平行六面体
中,
两两夹角为60°,长度分别为2,3,1,点P在线段BC上,且
,记
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/1549ec42-ee84-462d-adb8-f79b5e4695ad.png?resizew=215)
(1)试用
表示
;
(2)求
模.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af55b84645a6a98e36ad57c96938af8e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64d2ab4d092ce10d0d87974f70394e88.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/1549ec42-ee84-462d-adb8-f79b5e4695ad.png?resizew=215)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bf272d8f03199a361ceaed8466ade6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0ab0323dd9f148bd018bdf292572d2.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0ab0323dd9f148bd018bdf292572d2.png)
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