名校
解题方法
1 . 已知长方体
中,
,
,
,
为矩形
内一动点,设二面角
为
,直线
与平面
所成的角为
,若
,则三棱锥
体积的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d399d731913a563e291b817831a0c678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa3205b1df826d63914dcb55bb3ab43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc0e87de02d9fe868bed6846f0709c8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-05-16更新
|
2264次组卷
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6卷引用:上海市格致中学2023-2024学年高二下学期期中考试数学试题
上海市格致中学2023-2024学年高二下学期期中考试数学试题江西省南昌市2022届高三第三次模拟测试数学(理)试题(已下线)专题23 立体几何中的压轴小题-1(已下线)专题07 立体几何小题常考全归类(精讲精练)-1(已下线)专题7-2 立体几何压轴小题:角度与动点、体积(讲+练)-2(已下线)第二章 立体几何中的计算 专题三 空间体积的计算 微点4 四面体体积公式拓展综合训练【培优版】
名校
解题方法
2 . 已知正方体
的棱长为3,动点M在侧面
上运动(包括边界),且
,则
与平面
所成角的正切值的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a84513d4f34ced300ba033741597dd8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5563473602e1b17d582a165b7b7b6b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-24更新
|
2091次组卷
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10卷引用:上海市青浦高级中学2022-2023学年高二上学期12月质量检测数学试题
上海市青浦高级中学2022-2023学年高二上学期12月质量检测数学试题西南四省名校2022届高三下学期第三次大联考理科数学试题(已下线)查补易混易错点06 立体几何-【查漏补缺】2022年高考数学(理)三轮冲刺过关(已下线)理科数学-2022年高考押题预测卷02(全国甲卷)宁夏平罗中学2022届高三下学期第三次模拟数学(理)试题江苏省连云港市灌云高级中学2021-2022学年高二下学期5月阶段测试数学试题(已下线)第20讲 空间向量与立体几何-2(已下线)专题11空间向量与立体几何必考题型分类训练-2湖南省常德市第一中学2022-2023学年高二下学期期中数学试题河南省部分学校2023届高三押题信息卷(一)理科数学试题
名校
3 . 如图,棱长为1的正方体
,点
沿正方形
按
的方向做匀速运动,点
沿正方形
按
的方向以同样的速度做匀速运动,且点
分别从点A与点
同时出发,则
的中点的轨迹所围成图形的面积大小是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8776cb36494afe1f13cfc60099a973b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9961e091f180e964a962adf6916f33c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28af8d2c49057caaff1c1e2c4d5ef7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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2022-01-16更新
|
2203次组卷
|
7卷引用:上海市杨浦高级中学2021-2022学年高二上学期期末数学试题
名校
4 . 如图所示,正方体
的棱长为1,
分别是棱
的中点,过直线
的平面分别与棱
交于
,设
求:
![](https://img.xkw.com/dksih/QBM/2019/11/6/2328235043495936/2328591902277632/STEM/7fd14571-6498-4d6a-a27c-02f62b2eaf4f.png?resizew=251)
(1)求
与面
所成的角的大小;
(2)求四棱锥
的体积
并讨论它的单调性;
(3)若点
是正方体棱上一点,试证:满足
成立的点的个数为6.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebecdc0f0f815ff0083d85d3f539b36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0b3c955fa0be5039141f46ee8e9a874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/193308ab66f6d89298c5764079ff7706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c8a190d4efdbb560ce09945cef77fd.png)
![](https://img.xkw.com/dksih/QBM/2019/11/6/2328235043495936/2328591902277632/STEM/7fd14571-6498-4d6a-a27c-02f62b2eaf4f.png?resizew=251)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207fde4b813c3eadea10c023aa8d463e.png)
(2)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9676b0b48e4b05fad1fed46273ac63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b161756ce7d22dfe758c4cb784703aa3.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7416e05fbca7bf4f600a9b81c8f7eb2c.png)
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