如图,在三棱柱
中,
,
,
两两互相垂直,
,
,
分别是侧棱
,
上的点,平面
与平面
所成的(锐)二面角为
,则当
最小时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b0594893c40c5578051097ccad61e0.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.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/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd8f940b796af67206b3f9dd410a407.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b5954e01b2d27c4b006a24d311230e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b0594893c40c5578051097ccad61e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/19/87d81400-2f42-4bf0-b6ce-0f1f0fb5bc24.png?resizew=128)
更新时间:2023-09-15 23:58:35
|
【知识点】 已知面面角求其他量
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填空题-单空题
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适中
(0.65)
解题方法
【推荐1】在正方体中,设
,若二面角
的平面角的正弦值为
,则实数
的值为
您最近一年使用:0次
填空题-单空题
|
适中
(0.65)
解题方法
【推荐2】若面
的法向量
,面
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________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e363ca3813a41ccd1138666776700471.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次