解题方法
1 . 正三棱柱(底面是正三角形的直棱柱)
的底面边长为
,侧棱长为
,则
与
所成的角为___________ .
![](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/d7f6f93171329d508d491143b9d71f7b.png)
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2 . 设
,
是抛物线
上的两点,
,
是坐标原点,下列结论成立的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.直线![]() ![]() | B.![]() ![]() |
C.线段![]() | D.![]() |
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解题方法
3 . 已知点
是抛物线
上的一个动点,则点
到点
的距离与点
到
轴的距离之和的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b56409929f4a4b77a4aa36639c7701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.2 | B.![]() | C.3 | D.![]() |
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486次组卷
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3卷引用:广东省汕头市金山中学2020-2021学年高二上学期期末数学试题
名校
解题方法
4 . 如图,在直三棱柱
中,
,
,
分别为侧棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/2/2/2649456150011904/2651679379013632/STEM/967c2f61abe948b0997626223e235fdc.png?resizew=113)
(1)证明:
平面
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af30873743bc357559cc6bd8b5241c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2021/2/2/2649456150011904/2651679379013632/STEM/967c2f61abe948b0997626223e235fdc.png?resizew=113)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d365ce9f4bacc4d4bb15dbdb5306a5.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d365ce9f4bacc4d4bb15dbdb5306a5.png)
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2021-02-05更新
|
397次组卷
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5卷引用:广东省清远市2020-2021学年高二上学期期末数学试题
解题方法
5 . 已知三棱锥B-ACD的侧棱两两垂直,E为棱CD的中点,且
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/714cc3707bba3bfdb56e251999be8592.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
A.![]() |
B.异面直线BE与AD所成角的正弦值为![]() |
C.平面ABE与平面ABD不垂直 |
D.平面ABE与平面ACD所成锐二面角的余弦值为![]() |
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5卷引用:广东省清远市2020-2021学年高二上学期期末数学试题
广东省清远市2020-2021学年高二上学期期末数学试题广东省清远市2020-2021学年高二上学期期末教学质量检测数学试题(Word解析版)(已下线)全册综合测试模拟二 -【新教材精创】2020-2021学年高二数学新教材知识讲学(人教A版选择性必修第一册)苏教版(2019) 选修第二册 限时训练 第9练 空间角的计算(2)河南省郑州市第十八中学2023-2024学年高二上学期期末模拟数学试题(一)
解题方法
6 . 设
,
分别为双曲线
(
,
)的左、右焦点
为
的左支上一点,
的焦距等于
,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e376b48dacaa422f4d21afe48c32523.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ef569668e797b1e94257fd5f4384dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe369d82a8094439c84fa94506e9123.png)
A.![]() | B.双曲线C的离心率为![]() |
C.![]() | D.双曲线C的离心率为![]() |
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2021-02-05更新
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3卷引用:广东省清远市2020-2021学年高二上学期期末数学试题
解题方法
7 . 如图,在四棱锥
中,
底面
,底面
为直角梯形,
,
,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/e96b7a09-8ce9-4bd6-8315-5f94f09c1a69.jpg?resizew=204)
(1)证明:
平面
;
(2)求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace900749d0861aa51fcc6d72c51f82c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e839ac941e8bf536ff35a12e56c7a400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/e96b7a09-8ce9-4bd6-8315-5f94f09c1a69.jpg?resizew=204)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1069d514c3c32aeabd274475ee209ed6.png)
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8 . 如图,在正方体
中,点
,
分别是棱
和
的中点,则下列选项正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/463d9029-6053-4fa7-ad31-037193e8394c.png?resizew=183)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/463d9029-6053-4fa7-ad31-037193e8394c.png?resizew=183)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-02-04更新
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1171次组卷
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4卷引用:广东省东莞市2020-2021学年高二上学期期末数学试题
广东省东莞市2020-2021学年高二上学期期末数学试题苏教版(2019) 选修第二册 限时训练 第4练 空间向量基本定理湖北省宜昌市夷陵中学2021-2022学年高二下学期诊断性检测数学试题(已下线)第03讲 空间向量及其运算的坐标表示(7大考点)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)
9 . 如图,已知曲线
上有定点
,其横坐标为
,
垂直于
轴于点
,
是弧
上的任意一点(含端点),
垂直于
轴于点
,
于点
,
与
相交于点
,则点
的轨迹方程是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/06b9e154-3344-410d-9ec1-709d404ad852.png?resizew=135)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70444e3a66d1068038c5b5a77c7954aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd2b7f0278281f7864a5e3ee440857a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/15/06b9e154-3344-410d-9ec1-709d404ad852.png?resizew=135)
A.![]() | B.![]() |
C.![]() | D.![]() |
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10 . 已知点
,
是抛物线C:
上的两点,满足
,
是坐标原点.
(1)求证:
;
(2)若
于点D,求点D的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9159bc3e165a4f2ee9d67f8f5180e7bc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cee097d4fe948c3d4f1b5c28b24adf3.png)
您最近一年使用:0次
2021-02-03更新
|
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|
2卷引用:广东省梅州市2020-2021学年高二上学期期末数学试题