1 . 已知平面
与平面
成
角,
,则C与D之间的距离是( )
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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2023-09-02更新
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5卷引用:新疆维吾尔自治区阿克苏地区第一中学2023-2024学年高二上学期期中考试数学试卷
新疆维吾尔自治区阿克苏地区第一中学2023-2024学年高二上学期期中考试数学试卷北师大版(2019) 选修第一册 数学奇书 学业评价(二十九) 三垂线定理及其逆定理(已下线)专题 1.1 空间向量基本定理及基底求最值12种题型(3)四川省成都市第四十九中学校2023-2024学年高二上学期期中数学试题(已下线)第6章 空间向量与立体几何 章末题型归纳总结-【帮课堂】2023-2024学年高二数学同步学与练(苏教版2019选择性必修第二册)
名校
2 . 已知圆
的直径
,
圆
所在平面,
,点
是圆周上不同于
、
的一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/4/f1545863-8d2f-4ad2-84a5-ebb9446b7057.png?resizew=167)
(1)证明:
;
(2)已知
,点
是棱
上一点,若
与平面
所成角的余弦值为
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/4/f1545863-8d2f-4ad2-84a5-ebb9446b7057.png?resizew=167)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5148e7fc64ac3fed107192236f8e129d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10134e7a46e6f6f7cb9d5e2371727d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b60870baa5e3fbc33a749aa5f0a94be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e699f6e1923284a5eecdc897bfbc2337.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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3卷引用:新疆乌鲁木齐市第101中学2022-2023学年高二下学期开学考试数学试题
解题方法
3 . 在几何体
中,底面
是边长为6的正方形,
,
,
,
均为正三角形,且它们所在的平面都与平面
垂直.
是线段
上的动点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/12e03020-2ad4-4276-97df-0cb1f1bf54cf.png?resizew=155)
(1)若
,求三棱锥
的体积;
(2)若平面
平面
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17d4a6cf11cda87b3dfafaecdec683f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14b86b8bf99386fc939c9c12b1355ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6a0c85deb80d8e63bc60127e803f7ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7ab8de2231d3bfbd289dcdf6d512667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6801e866d3f9f26886e271708a73a6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e57a13c665af88f326c9890072bf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2e6648c9e56d68506017df7424be99c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/4/12e03020-2ad4-4276-97df-0cb1f1bf54cf.png?resizew=155)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1c3ea872a20fdc1843cb5ffce8a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1234a7bbfe925eeea7f17d30bfab88b3.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbfb8a8a4d0731f5b237d5c8e169725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24fac8b38a9cf7602391f6d6ca933bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2022-12-04更新
|
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4卷引用:新疆生产建设兵团地州学校2023届高三上学期一轮期中调研考试数学(理)试题