三棱柱
中,侧面
是边长为
的菱形,
,
交
于点
,
侧面
,且
为等腰直角三角形,若建立如图所示的空间直角坐标系
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8db421b3e8872ee5add4480da4a291.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c510b85dfbca0e3ab0744655d77e8c93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://img.xkw.com/dksih/QBM/2021/12/24/2879457274839040/2880092512428032/STEM/d911c756-f19d-4ec5-b92d-7bc0d3554be1.png?resizew=273)
更新时间:2021-12-25 13:06:07
|
【知识点】 求空间图形上的点的坐标
相似题推荐
解答题-问答题
|
较易
(0.85)
解题方法
【推荐1】棱长为2的正方体
中,E是DC的中点,取如图所示的空间直角坐标系.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/121f200b-0edb-4bbf-9303-e5befcdee3ca.png?resizew=160)
(1)写出A、
、E、
的坐标;
(2)求
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/5/121f200b-0edb-4bbf-9303-e5befcdee3ca.png?resizew=160)
(1)写出A、
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
您最近一年使用:0次
解答题-问答题
|
较易
(0.85)
【推荐2】如图,在三棱柱
中,平面
平面
,
,
且
,
,请建立适当空间直角坐标系,并求各个点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a60f5d069760bfe69f9cdc1b6e1e048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/795fcd4a1db3c143799f9237ae6421bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e99d003767a849025e5039f1df6135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e21aa38de80da8ccaa7ce51595e7bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3160d0d434feec0279c93d45111dd1be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f16e77b039842ae40a4b04c527655a.png)
![](https://img.xkw.com/dksih/QBM/2023/3/27/3203443576389632/3210916859281408/STEM/5100a6f8bf984869abf254ec8050b2cd.png?resizew=120)
您最近一年使用:0次