已知四棱锥
的底面边长均为1,其顶点
在底面的射影恰好为四边形
对角线的交点,且四条侧棱与底面所成的角都相等异面直线
与
所成角的正弦值为
,则四棱锥
外接球的半径为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-04-29 16:04:25
|
【知识点】 多面体与球体内切外接问题
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解题方法
【推荐1】中国的折纸艺术历史悠久,一个同学在手工课时,取了一张长方形纸,长边为
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名校
【推荐2】如图,在梯形
中,
,将
沿对角线
折起,使得点
翻折到点
,若面
面
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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