如图,将圆
沿直径
折成直二面角,
是所在半圆弧的中点,
是所在半圆弧的任意一点,则直线
与平面
所成角的大小为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684d8fe0d6da7564247e47b948e3997.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/20/8d305c4e-e88b-4253-8a44-aa9f06b5c311.png?resizew=148)
更新时间:2023-05-19 08:27:40
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【知识点】 求线面角
相似题推荐
填空题-双空题
|
适中
(0.65)
【推荐1】已知正方体
的边长为2,由综合法可求得:点
到平面
的距离为_________ ;直线
与平面
所成角的正弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13cfdc6224181d44e63aab43ddaf07ef.png)
![](https://img.xkw.com/dksih/QBM/2020/7/13/2505217134878720/2506669448159232/STEM/21ce7ccd27b44fd1a696df7208f04905.png?resizew=160)
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填空题-单空题
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适中
(0.65)
名校
解题方法
【推荐2】在长方体
中,对角线
与棱
,
,
所成的角分别为
,
,
,与平面
,平面
,平面
所成的角分别为
,
,
,则下列说法中正确的是_______ .
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115699798990848/3115850044710912/STEM/e1b15d44a0d04b4daf4abb66e9e828e5.png?resizew=419)
①
;②
;
③
;④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943b765718479c160ba61ec5c6f8c5f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e29bf5652f0d4f764c3606efcdb445f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9177f43add5ca8480daa636afc5862b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e12ee28006ffc4b287e6762b01608852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc43aea5dd0fef2081e399adb23560e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d141631d586f5c35ee68f611c04dec.png)
![](https://img.xkw.com/dksih/QBM/2022/11/23/3115699798990848/3115850044710912/STEM/e1b15d44a0d04b4daf4abb66e9e828e5.png?resizew=419)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19750bcea97effc98b3f8001f88324fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4621598dcab6f453c74b193413edcf0f.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd2d1925c0411c6189182fd4fd36133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f221c48e2e1f6a849777546b0c2feccb.png)
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