名校
解题方法
1 . 如图,直三棱柱
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/30/fbbe8043-4d8a-4125-87f9-67195bf87f43.png?resizew=304)
(1)证明:
平面
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a1be17e0a3e51cde1f50f384198e71e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/30/fbbe8043-4d8a-4125-87f9-67195bf87f43.png?resizew=304)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/469b7a1fe70476caa9b0f1a6a9c39c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea848cd2aa3a464618020475097949fc.png)
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2022-06-28更新
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4070次组卷
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7卷引用:宁夏吴忠市吴忠中学2024届高三上学期开学第一次月考数学(文)试题