1 . 已知正三棱锥
的底面是边长为6的正三角形,其外接球球
的表面积为
,且点
到平面
的距离小于球
的半径,
为
的中点,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2020/12/18/2616689632813056/2618436394057728/STEM/47941f76-7162-4214-9930-05893119e36e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/178ec48ec6dec55778c74962a928d600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://img.xkw.com/dksih/QBM/2020/12/18/2616689632813056/2618436394057728/STEM/47941f76-7162-4214-9930-05893119e36e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4卷引用:陕西省2020-2021学年高三上学期教学质量检测测评卷一文科数学试题
陕西省2020-2021学年高三上学期教学质量检测测评卷一文科数学试题陕西省2020-2021学年高三上学期教学质量检测测评卷一理科数学试题辽宁省沈阳市小三校2022-2023学年高三上学期10月月考数学试题(已下线)专题7-2 立体几何压轴小题:角度与动点、体积(讲+练)-1