1 . 莲花山位于鄂州市洋澜湖畔.莲花山,山连九峰,状若金色莲初开,独展灵秀,故而得名.这里三面环湖,通汇长江,山峦叠翠,烟波浩渺.旅游区管委会计划在山上建设别致凉亭供游客歇脚,如图①为该凉亭的实景效果图,图②为设计图,该凉亭的支撑柱高为3
m,顶部为底面边长为2的正六棱锥,且侧面与底面所成的角都是
.
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016619399430144/3017678286331904/STEM/c7650f65a0494adf809f47db33ba5c7d.png?resizew=465)
(1)求该凉亭及其内部所占空间的大小;
(2)在直线PC上是否存在点M,使得直线MA与平面
所成角的正弦值为
?若存在,请确定点M的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://img.xkw.com/dksih/QBM/2022/7/6/3016619399430144/3017678286331904/STEM/c7650f65a0494adf809f47db33ba5c7d.png?resizew=465)
(1)求该凉亭及其内部所占空间的大小;
(2)在直线PC上是否存在点M,使得直线MA与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/814b61e61042874774c05cac41208024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
您最近一年使用:0次
2022-07-07更新
|
514次组卷
|
3卷引用:重庆市四川外语学院重庆第二外国语学校2022-2023学年高二上学期期中数学试题
名校
解题方法
2 . 在斜三棱柱
中,底面是边长为4的正三角形,
,
.
平面
;
(2)证明:
;
(3)求直线
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/2c3a693e8339e34c6f15f72a1aae75e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26208e5d58cc5abf1af936480d1932b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1f647de53756993a680347e8ce3c0f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eacc0e7474802ce634de6f55a3287115.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
您最近一年使用:0次
2022-07-02更新
|
620次组卷
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3卷引用:宁夏银川市第二中学2022-2023学年高一下学期期中考试数学试题
3 . 如图,在底面为矩形的四棱锥
中,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/acc3465c-9972-430c-86b6-c0d321ef8a6b.png?resizew=170)
(1)证明:
;
(2)若
,设
为
中点,求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/acc3465c-9972-430c-86b6-c0d321ef8a6b.png?resizew=170)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c583493109d50c9e4634c05e9042a9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b0c640ea36cde2036b4ad729ab42cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
解题方法
4 . 如图,正方体
的棱长为1,
,求:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/faad0f76-579c-4ed5-9352-dc06ca188453.png?resizew=177)
(1)
与
所成的角的大小;
(2)
与平面
所成的角的正切值;
(3)二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc61c09af6f26418c35394129c086a7d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/faad0f76-579c-4ed5-9352-dc06ca188453.png?resizew=177)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24cfad1ba71a78d8f415335cde2f8c52.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19c1bcb8431ae315ecd29c6478d3eff.png)
您最近一年使用:0次
5 . 如图,在平面四边形
中,
,
,将
沿着
翻折,使得点
翻折到点
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/180c357f-dadf-4ea2-9529-8d7192f10223.png?resizew=371)
(1)证明:
.
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55340588bd240bc8bbe484f3037fd71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aded98ab04075fff4137ba759bea793.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e1b638760d907efe836500581da1596.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/180c357f-dadf-4ea2-9529-8d7192f10223.png?resizew=371)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5d56d8170b764b80a672cd6c861921.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
名校
6 . 已知四棱锥
满足:四边形ABCD为正方形,△PAD为等边三角形,且平面PAD⊥平面ABCD,
,E为PA的中点.
平面BDE;
(2)求直线PC和平面ABCD所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2597b5554284e275367c25529c6750f.png)
(2)求直线PC和平面ABCD所成角的正切值.
您最近一年使用:0次
2022-05-24更新
|
2113次组卷
|
5卷引用:重庆市第一中学校2021-2022学年高一下学期期中数学试题
7 . 如图,长方体
的对角线
与顶点
处的三个面所成的角分别为
.
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973680760856576/2976982514958336/STEM/9f0b6e1a-d051-4d88-834d-73a904bc8ecc.png?resizew=183)
(1)证明
为定值;
(2)若
,求实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c597ff77c65c5add6f50294e3eee9536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba63ad02b1d5af2982fac3d91eb15c.png)
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973680760856576/2976982514958336/STEM/9f0b6e1a-d051-4d88-834d-73a904bc8ecc.png?resizew=183)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d57a5c09b5aea68b1d8ab7ac4f750f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96ca77ee1b54d7d68affb7e21d4d5c82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
8 . 如图,正三棱柱
中,
,
,E、F分别为棱
和
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/ff330200-79d5-4b4a-b108-df1523c5aef5.png?resizew=146)
(1)求直线
与平面
所成角的正弦值;
(2)在线段
是否存在一点M,使得平面
∥平面
?若存在,请指出并证明;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/ff330200-79d5-4b4a-b108-df1523c5aef5.png?resizew=146)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed4cba9d2412e4a28f8740bddd5738d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9539f8fb13345b449274b67bbda995db.png)
您最近一年使用:0次
2022-05-05更新
|
864次组卷
|
4卷引用:河南省开封市五县2021-2022学年高一下学期期中考试数学试题
河南省开封市五县2021-2022学年高一下学期期中考试数学试题(已下线)专题10 立体几何的综合问题-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)(已下线)专题09 立体几何中的角度、距离、体积问题-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)重庆市中山外国语学校2022-2023学年高一下学期5月月考数学试卷
9 . 如图,在四面体ABCD中,
,
,M是棱AD的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963550293278720/2965867278622720/STEM/ba51e16c-3524-4df5-8e2c-37d8da28260a.png?resizew=175)
(1)求四面体ABCD的表面积和体积;
(2)求直线CM与底面BCD所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad8bfb2f5d95ff00cc4ef8b7eb78883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://img.xkw.com/dksih/QBM/2022/4/22/2963550293278720/2965867278622720/STEM/ba51e16c-3524-4df5-8e2c-37d8da28260a.png?resizew=175)
(1)求四面体ABCD的表面积和体积;
(2)求直线CM与底面BCD所成的角的正弦值.
您最近一年使用:0次
10 . 如图,在长方体
中,已知AB=BC=2,
.
上的动点,求三棱锥C-PAD的体积;
(2)求直线
与平面
的夹角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
您最近一年使用:0次
2022-04-23更新
|
95次组卷
|
3卷引用:沪教版(2020) 必修第三册 同步跟踪练习 期中测试