解题方法
1 . 如图,在四棱锥
中,底面
为正方形,
底面
,
,且
.
;
(2)当
为钝角时,求实数
的取值范围;
(3)若二面角
的大小为
,求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff3a0867937eaa4ca6900adfbecd8a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf7324df78fef873d61925f832b7b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbd1316b9d1f0c1e71fd078deec61f6.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66efb2e5b7aa63e8561be256d691fc88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(3)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324a1792318a3528772781fac2b4d2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
您最近一年使用:0次
名校
2 . 在空间直角坐标系中,设
、
、
、
.
(1)设
,
,求
的坐标,并判断
、
是否平行;
(2)求
、
的夹角
,以及
、
为相邻两边的三角形面积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e8077ed88333e0a9f03ab92a91ba6c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e859540e50445d2fd8a5732b4ce238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/350a7b3a3b62f81449127082d3c1e9f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97066e121aff1fc8987323e178afa6d5.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01113885773857ff8757cef3a790c0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75077aeeda4e407aa1cb25999469a68a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
解题方法
3 . 对于一个三维空间,如果一个平面与一个球只有一个交点,则称这个平面是这个球的切平面.已知在空间直角坐标系
中,球
的半径为
,记平面
、平面
、平面
分别为
、
、
.
(1)若棱长为
的正方体、棱长为
的正四面体的内切球均为球
,求
的值;
(2)若球
在
处有一切平面为
,求
与
的交线方程,并写出它的一个法向量;
(3)如果在球面上任意一点作切平面
,记
与
、
、
的交线分别为
、
、
,求
到
、
、
距离乘积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd48d1ef9e8cd3b7aea60fd95b70fb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef1e8a88d934eca5399decc64fdbd43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
(1)若棱长为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2122e3f1e76a635e58e4d54aa594c552.png)
(2)若球
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5dcb10e84c60bbb67a382349ebeb3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67202feb9b75fb893e9fc70cc1059d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67202feb9b75fb893e9fc70cc1059d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)如果在球面上任意一点作切平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
解题方法
4 . 在棱长为1的正方体
中,
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/1e9ca2ab-8a46-4210-84f2-cf2d5699ba8a.png?resizew=177)
(1)求二面角
的大小;
(2)求点
到平面
的距离;
(3)若点G是棱
上一点,当G在何处时,
平面
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/505f8477b4a74dbeedff2163fef376a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348b35cc1233c9f83b5e2204a6beec4f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/1e9ca2ab-8a46-4210-84f2-cf2d5699ba8a.png?resizew=177)
(1)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea7ddcf270cad9962145e0e75c8c7a57.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
(3)若点G是棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf65b8884909d735d575efe81a2d2ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589c878e789e07e33d65c8a18cf2c58a.png)
您最近一年使用:0次
23-24高二上·全国·期末
5 . 已知向量
,
,
,
,
.
(1)求向量
,
,
;
(2)求向量
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abfb0471e9d4f324f055d57ba874521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd279492008c97e958bdf2385887e28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad26705a0c0bf5c784e713b6348a786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460e5ba67828c57daf2edb497fb52e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f622a667018a0a1b7b9334909c136090.png)
(1)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
(2)求向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5053bf0eb901f607d8c69a42b706af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/626472a52f5215c70a99e7fd5dad8fec.png)
您最近一年使用:0次
6 . 已知空间中三点
,
,
.设
,
.
(1)求
和
;
(2)若
与
互相垂直,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe15cbb36e4dc28106343ffcbe7cc65d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0378a859d622e2fdb8bd728b49e52c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ffba0bab7e115d89e400abd68770ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d458bed4c0f3e91667eb8705c9c90d99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/415c6484536cc61efd5529fcb0b15eb9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67a5673958e175b00200a75e645c73c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0212ab68627919b1d22ac348a3e849.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afa3c16cbfc294580a7c90884ff4dbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9441846da0868582298cece138bec3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2023-12-20更新
|
348次组卷
|
2卷引用:上海市三林中学东校2023-2024学年高二上学期12月阶段性测试数学试题
名校
7 . 已知
.
(1)求
与
夹角的大小;
(2)若
,求实数k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ae966c60d3d915d4442682a8489020.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aa266d35ab51b86a054e9c048971ecb.png)
您最近一年使用:0次
解题方法
8 . 有很多立体图形都体现了数学的对称美,其中半正多面体是由两种或两种以上的正多边形围成的多面体,半正多面体因其最早由阿基米德研究发现,故也被称作阿基米德体.如图,这是一个棱数为
,棱长都相等的半正多面体,它的所有顶点都在同一个正方体的表面上,可以看成是由一个正方体截去八个一样的四面体所得.已知点
为线段
上一点且
,若直线
与直线
所成角的余弦值为
,设半正多面体的棱长为
,将半正多面体补成正方体,建立如图所示的空间直角坐标系.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/f7c0b0c9-c673-425c-9dfc-2c6cfe7117e4.png?resizew=315)
(1)求正方体的棱长,并写出A,B,C,D,F点的坐标.
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e60fbe6820130fb20abc555a94b5ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d03acb29a5812acad760d564d6c84be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01eacbc4d1b4694985214023faa00128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/f7c0b0c9-c673-425c-9dfc-2c6cfe7117e4.png?resizew=315)
(1)求正方体的棱长,并写出A,B,C,D,F点的坐标.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
9 . 已知空间三点
、
、
,设
.
(1)若
,求点
坐标;
(2)若向量
与
互相垂直,求实数
的值;
(3)若向量
与
平行,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60cfd4c8f79891ea540d34bb21b9fbd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8005cca2b31654e217ce4764a889f6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9ae52f052336b40622e9e761de5c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdcd1cbebe2c8de8026a347681d5142.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c9ba21933a3ac9f13936183443e8d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc3f8c3279e03e05590144251e83ff71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c817b4c327e8790f131001e0f53474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cff49eb3ad7c9c76dd3852182b476367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43aabfbc35af90433eb8d30a8ef6e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
10 . 对于空间向量
,定义
,其中
表示x,y,z这三个数的最大值.
(1)已知
,
.
①直接写出
和
(用含
的式子表示);
②当
,写出
的最小值及此时
的值;
(2)设
,
,求证:
;
(3)在空间直角坐标系
中,
,
,
,点Q是
内部的动点,直接写出
的最小值(无需解答过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b303ef66609858e8ab234b6dabccba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e382f70d741ee01c165391ce980155d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4461408813c1476a8a8073c83b8989.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23056c429159c0198f865ff11972d8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e17d2355419564f6d9737295412b58c.png)
①直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9873960d64934875139754efbdfe951d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af5f843689a63bc176c2d2171b6a1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53168695826b0a33a23067b76173c7e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780ef5119f58f853ce9dd2b9176ffdde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778ae4468d857c229073875e0ee0ce31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6772fa3937b97d9ec3aec1ea2ea143b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95086cc97ef93f5166489b3bc47e1911.png)
(3)在空间直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b32ab04dd852329d5918b177c199eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee736aec4313d04a5921ed7e5800b3b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d04a00e46c1ffb335f73506041c66dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084fc7655647b596d07e80269d086e5a.png)
您最近一年使用:0次