名校
1 . 如图,将绘有函数
部分图象的纸片沿x轴折成直二面角,若此时A,B两点之间的空间距离为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1644dc8ce444930d96b4b621233c0f.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e87a047517eacee042a009cafb1fa3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf1644dc8ce444930d96b4b621233c0f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/28/83215fe8-3203-40e0-884e-169990e9bfa6.png?resizew=386)
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2023-06-25更新
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675次组卷
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5卷引用:山东省菏泽市菏泽一中南京路校区2024届高三上学期12月月考数学试题
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2 . 如图所示三棱锥中,∠BCD=90°,△ABD为等边三角形,二面角
为直二面角,
,则该三棱锥外接球体积为( )
![](https://img.xkw.com/dksih/QBM/2021/12/8/2868013496877056/2873265696751616/STEM/d18bb68dac8d40b494186a6dc06000d7.png?resizew=125)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb78cdb972880c4a69ef564f2ccfcbd.png)
![](https://img.xkw.com/dksih/QBM/2021/12/8/2868013496877056/2873265696751616/STEM/d18bb68dac8d40b494186a6dc06000d7.png?resizew=125)
A.![]() | B.![]() | C.![]() | D.![]() |
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2021-12-15更新
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994次组卷
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5卷引用:山东省泰安市新泰市第一中学东校2021-2022学年高三上学期期中数学试题
2021高三上·山东·专题练习
名校
3 . 如图,在四棱锥
中,
为等边三角形,
平面
,二面角
的大小为60°.
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699161539764224/2699504057581568/STEM/d96c1a5c-e042-43fa-bab2-c9148404922d.png?resizew=202)
(1)求证:
平面
;
(2)已知
,在线段
上是否存在点
,使得直线
与平面
所成角的正弦值为
?若存在,请确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd680b3e2aeaba55e0b3b2486a0a3a8.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699161539764224/2699504057581568/STEM/d96c1a5c-e042-43fa-bab2-c9148404922d.png?resizew=202)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6785c7c85a503531649f9c9b4cbfcf04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d666dd3308604685e59f4ca22663b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aace91caec728e174daec29a3568ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
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2021-04-14更新
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1872次组卷
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7卷引用:数学-学科网2021年高三1月大联考(山东卷)
名校
解题方法
4 . 已知菱形
边长为3,
,
为对角线
上一点,
.将
沿
翻折到
的位置,
记为
且二面角
的大小为120°,则三棱锥
的外接球的半径为______ ;过
作平面
与该外接球相交,所得截面面积的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1902fa33d5b84c4156c19b34bbecdb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3ea25ef38e4afa8f75ffd0842890289.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc66a96c1297e7068e987e0e70723e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb4c6e9a723aa843e6ba62d7c1a3a6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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2020-11-22更新
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997次组卷
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5卷引用:山东省潍坊市2020-2021学年高三上学期期中考试数学试题
山东省潍坊市2020-2021学年高三上学期期中考试数学试题江苏省盐城中学2020-2021学年高三上学期12月第三次阶段性质量检测数学试题广东省惠州市光正实验学校2023届高三上学期11月月考数学试题(已下线)第三章 折叠、旋转与展开 专题三 球与翻折 微点3 球与翻折综合训练(已下线)专题09 外接球、内切球与动点最值(1) -期末考点大串讲(苏教版(2019))
2012高二·甘肃天水·学业考试
真题
5 . 设P是
的二面角
内一点,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5a95c17d2278aa48376746a7ef577f.png)
垂足,
则AB的长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b11d0840c5718c42ce3fe43fa00a4755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5f0d07ad7876b56fc5c07337dfd6ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef5a95c17d2278aa48376746a7ef577f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e821d0efdae45834d3e4745bf9b6873a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5580effdcfc5afc3a228eb5d0099c1db.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-01更新
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1298次组卷
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3卷引用:山东省泰安第二中学2019-2020学年高三上学期10月月考数学试题
山东省泰安第二中学2019-2020学年高三上学期10月月考数学试题2004 年普通高等学校招生考试数学(理)试题(重庆卷)(已下线)2011-2012学年甘肃省天水一中高二第二次学业水平测试数学试卷