名校
1 . 已知圆锥
的底面半径为2,母线长为
,点
为圆锥底面圆周上的一点,
为
圆心,
是
的中点,且
.
(1)求圆锥的全面积;
(2)求直线
与平面
所成角的大小.
(结果用反三角函数值表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cbb271baca5cd015f30e07d9eebfd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
圆心,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b895d317c1f6a38bb2337ab6e4803008.png)
(1)求圆锥的全面积;
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
(结果用反三角函数值表示)
![](https://img.xkw.com/dksih/QBM/2018/4/19/1927583351160832/1930349183631360/STEM/d0884b076c1e43a4a357df24610ee418.png?resizew=132)
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2018-04-23更新
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317次组卷
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3卷引用:上海市复兴高级中学2020-2021学年高二下学期期中数学试题