1 . 如图所示,已知在长方体
中,
,则
和
所成角的大小是___________ ,
和BG所成角的大小是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/815caebd34d92c29b70ff5508208bd45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/58f04908-b593-4ae6-8a2a-21c1d58eec5f.png?resizew=223)
您最近一年使用:0次
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解题方法
2 . 已知长方体
的顶点都在球
的表面上,且
,则球
的表面积为______ .若
与
所成的角为
,则
与
所成角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c9d5815dc775d5a5810fff0b016a8d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
您最近一年使用:0次
2020-07-13更新
|
299次组卷
|
3卷引用:江苏省无锡市江阴市2020-2021学年高三上学期开学检测数学试题
3 . 如图,正方体
中,直线
和
所成角的大小为___________ ,直线
和平面
所成角的大小为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd694ad3a4733c7c84aaa7946aeea4de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c4ad6c77a6459a37bc398ecd5e5253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a097e367a5df43295a28a2f16bdfe95f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c4ad6c77a6459a37bc398ecd5e5253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a17b77df072bd8e0be3b7ca26d25545b.png)
![](https://img.xkw.com/dksih/QBM/2018/6/25/1975123544522752/2009007113461761/STEM/31e184bd754c4c17aeae15e47f6e403e.png?resizew=186)
您最近一年使用:0次
2016-12-04更新
|
534次组卷
|
7卷引用:北京师范大学附属实验中学 2020-2021学年高二下学期开学检测数学试题