已知
,
为空间中一点,且
,则直线
与平面
所成角的正弦值为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83e44a1cc4d47b13f6c3b69544c7d026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
9-10高二下·河南郑州·期末 查看更多[4]
(已下线)郑州智林学校09-10学年高二下学期期末考试数学试卷(理科)(已下线)新课标高三数学空间向量及其运算、角的概念及其求法和空间距离专项训练(河北)辽宁省沈阳市东北育才学校2016-2017学年高二上学期第二次段考数学试题(理科)四川省宜宾市第四中学校2022-2023学年高二下学期开学考试数学(理)试题
更新时间:2019-01-30 18:14:09
|
【知识点】 求线面角
相似题推荐
填空题-单空题
|
较易
(0.85)
【推荐1】若长方体
中,
,
,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/9673cb91a7efbc4abaa7124ab986bf1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b49632d9907a34326d576f0727800be7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b4cd2b33bd983a9ed6575b9de04a46a.png)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
解题方法
【推荐2】在直三棱柱
中,
,E,F分别为
的中点,则直线
与平面
所成角的大小为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3193b2336fe31d09ab02f7f6da7d9a4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d06f8edd1a1f18ca2dae700c6a29ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
您最近一年使用:0次