1 . 三棱锥
中,
,
是斜边
的等腰直角三角形,则以下结论中:
①异面直线SB与AC所成的角为90°;
②直线SB
平面
;
③平面
平面
;
④点C到平面
的距离是
.
其中正确结论的序号是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7ab0df2ffe264fdc5296b65286d43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/19/c73409de-085e-4fa1-a690-70aae7d5e479.png?resizew=138)
①异面直线SB与AC所成的角为90°;
②直线SB
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b6e6192cf24ada791c26c2d6d434069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
④点C到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b234f945df3ebb9fe5e3e903fad696b7.png)
其中正确结论的序号是
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2 . 如图,正三棱柱
的底面边长为2,
与平面
所成角的大小为
,则线段
在平面
内的射影长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/3/2edf1529-9ca3-4bc7-ac83-b1f8c38f802b.png?resizew=124)
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3 . 已知圆锥的顶点为
,轴截面
是边长为1的等边三角形,
为底面中心,
为
的中点,动点
在圆锥底面内(包括圆周).若
,则
与圆锥底面所成角的正切值的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86f04e898cd5458f14e93d443a721678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
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4 . 正三棱柱
的底面边长为
,侧棱长为
,则
与侧面
所成的角的大小为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a3cb9b1fb6f8b944c8d636f2840df4.png)
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5 . 已知三棱锥
的侧面展开图放在正方形网格中的位置如图所示,那么在三棱锥
中,
与
所成的角为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/29d7d4a3-14a6-45c7-8c45-272101850462.png?resizew=181)
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6 . 如图,已知菱形
所在的平面与
所在的平面互相垂直,且
.则平面
与平面
所成的锐二面角的余弦值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04558534bae7c01e0c1aade3e48dff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/25/89f9f8a4-e3b2-4ec8-8360-75f8f584bf1e.png?resizew=160)
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7 . 已知三棱锥
中,
平面BCD,
,
,
,则三棱锥
的外接球的表面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e921f46d90e43f4517c55832b6280f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6bdfb0e1be5583e794ab614a8abe1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
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2023-09-29更新
|
836次组卷
|
4卷引用:海南昌茂花园学校2022-2023学年高二上学期期中考试数学试题
名校
解题方法
8 . 如图①,在
中,
,
,D,E分别为AC,AB的中点,将
沿DE折起到
的位置,使
,如图②.若F是
的中点,则四面体FCDE外接球的体积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b85155ef02a3d4ad84819e14d0c12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa2a83fed9bf4cb09d84a980452e346.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffbf41f3890efb6956907ad3c4062a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/13/12e1ddc8-4203-4fda-959b-6748bf27d1e7.png?resizew=322)
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2023-09-27更新
|
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|
2卷引用:湖北省武汉市江夏实验高级中学2023-2024学年高二上学期9月月考数学试题
解题方法
9 . 如图长方体
中,
,
,上底面
的中心
到平面
的距离是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3e58edd1f900ca82bb2a3058293f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b65065ec3a0cb4b050989165c003d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775df7ba0dc94c15e9e706194a463f1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/27/1e5756d1-3fe8-4b0b-a3d6-d43f7aeb3d3e.png?resizew=171)
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2023-09-25更新
|
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2卷引用:浙江省衢温“5+1”联盟2022-2023学年高二上学期期中联考数学试题
10-11高三·贵州·阶段练习
名校
10 . 三棱锥
的四个顶点点在同一球面上,若
底面
,底面
是直角三角形,
,则此球的表面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965f3beeb15bab8f6620f919721398ef.png)
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2023-09-24更新
|
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|
5卷引用:2011届贵州省五校高三第五次联考理科数学(暨遵义四中第13次月考)
(已下线)2011届贵州省五校高三第五次联考理科数学(暨遵义四中第13次月考)黑龙江省鸡西市实验中学2022-2023学年高二上学期10月月考数学试题宁夏回族自治区石嘴山市平罗县平罗中学2022-2023学年高二上学期期中理科数学试题四川省南充市南部县第二中学2023-2024学年高二上学期10月月考数学试题湖南省长沙市德成学校2023-2024学年高二上学期期中数学试题