解题方法
1 . 如图,圆锥的顶点为
,
为底面圆
的直径,
是圆
上一点,
是
的中点,
,
为底面圆周上异于点
的一个动点.
,使得
平面
?若存在,确定点
的位置;若不存在,请说明理由;
(2)记直线
与平面
所成角的最大值为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6c37511cda3523d69ab3c0f81478c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9abe6e8d1f4f1e8bdc46ddbae0cd789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08452588675f76da2f8d31387b3a8224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)记直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08452588675f76da2f8d31387b3a8224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de7d5ef3a3d9a03be91135fc426d57cc.png)
您最近一年使用:0次
2 . 如图,在平行六面体
中,E在线段
上,且
F,G分别为线段
,
的中点,且底面
为正方形.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/64aaaa44-e421-4524-b946-30f03c57691a.png?resizew=172)
(1)求证:平面
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c480d2b007fa8675efc646f91e256df2.png)
(2)若
与底面
不垂直,直线
与平面
所成角为
且
求点 A 到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbb8f28f80f9908f58f2d152e912766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd774c50250550d1c90f37ced4c0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17eaf5287e999c0adfe22f544d8e0945.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/64aaaa44-e421-4524-b946-30f03c57691a.png?resizew=172)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7bde810ee34535aa397501889a52b44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c480d2b007fa8675efc646f91e256df2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8946331b0a9d86e1a9c78797f3021455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3676ef5c9bde8f56ac5880b7f4aa1d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fda6215d1e6cb84f6a360b684634ea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509356b0db34d34ff0fe25337a48e16a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5e5c12362a66c14785327a528b6f4c.png)
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2024-03-06更新
|
1593次组卷
|
2卷引用:2024届辽宁省辽宁名校联盟(东北三省联考)高三3月模拟预测数学试题
解题方法
3 . 在表面积为
的球O的球面上存在A,B,C三点,且
,
,E为线段OC的中点,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a39dce3f1e36dbe01293c309816968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306b21a5d7e68f1992e5797b4368ed56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/397d16b4a33ef2ef92cf7adb5674ec60.png)
A.![]() |
B.异面直线![]() ![]() ![]() |
C.若点O到平面![]() ![]() ![]() ![]() ![]() |
D.若点O到平面![]() ![]() ![]() ![]() |
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名校
解题方法
4 . 已知正方体
的棱长为1,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/6fe6d7d4-da4f-4f88-ba46-8e77300a7510.png?resizew=151)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/6fe6d7d4-da4f-4f88-ba46-8e77300a7510.png?resizew=151)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.异面直线![]() ![]() ![]() |
D.![]() ![]() ![]() ![]() ![]() |
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名校
解题方法
5 . 给出下列命题,其中不正确的命题是( )
A.若![]() ![]() |
B.直线![]() ![]() |
C.若直线![]() ![]() ![]() ![]() ![]() ![]() |
D.已知向量![]() ![]() ![]() |
您最近一年使用:0次
名校
6 . 如图,
,O分别是圆柱上、下底面圆的圆心,该圆柱的轴截面是边长为2的正方形ABCD,P,Q分别是其上、下底面圆周上的动点,已知P,Q位于轴截面ABCD的异侧,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/99f4e9b5-0314-479a-9b68-3bb5c27b0d29.png?resizew=130)
(1)当A,P,
,Q四点共面时,求
;
(2)当
时,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37389700fb7678d1d1ec0b5ba13e16b4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/99f4e9b5-0314-479a-9b68-3bb5c27b0d29.png?resizew=130)
(1)当A,P,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905dd10639c9fef5ef8d66a124756140.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5e1af15b01646e12b8ec729dfd0da2.png)
您最近一年使用:0次
2023-10-14更新
|
404次组卷
|
2卷引用:辽宁省沈阳市第一二〇中学2023-2024学年高二上学期第二次质量监测数学试题
名校
解题方法
7 . 已知直角梯形形状如下,其中
,
,
,
.
(1)在线段CD上找出点F,将四边形
沿
翻折,形成几何体
.若无论二面角
多大,都能够使得几何体
为棱台,请指出点F的具体位置(无需给出证明过程).
(2)在(1)的条件下,若二面角
为直二面角,求棱台
的体积,并求出此时二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7972619832ab08705c12f2486aa13602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/5/89d10d27-7a5c-4999-b048-68bb095d4ed3.png?resizew=375)
(1)在线段CD上找出点F,将四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08c14e87a2bcf7090eab2fea73667d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6a1a01fdb186620b7939c789fb8bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab64d1bfb556d9c529f867b9c83ad67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6a1a01fdb186620b7939c789fb8bf3.png)
(2)在(1)的条件下,若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab64d1bfb556d9c529f867b9c83ad67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6a1a01fdb186620b7939c789fb8bf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd22fa132fa5c914b527c2781a516049.png)
您最近一年使用:0次
2023-06-03更新
|
712次组卷
|
3卷引用:辽宁省实验中学2023届高三第五次模拟数学试题
解题方法
8 . 如图,在四棱锥
中,侧棱
平面
,底面四边形
是矩形,
,点
、
分别为棱
、
的中点,点
在棱
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/feb0307f-0b41-42a8-8cf5-9a37f9538ba6.png?resizew=175)
(1)若
,求证:直线
平面
;
(2)若
,从下面①②两个条件中选取一个作为已知,证明另外一个成立.
①平面
与平面
的交线为直线
,
与直线
成角的余弦值为
;
②二面角
的余弦值为
.
注:若选择不同的组合分别作答,则按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888d60eea4792374fda946b0a7b2831c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/feb0307f-0b41-42a8-8cf5-9a37f9538ba6.png?resizew=175)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10d00f6d7d9019f8b964bd4e19d629a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/982d01f052709b72afeaf1015fc7acc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/149596fee6ed1e2d19fd8dadc14a8baf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
①平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
②二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42f1b90a3031fcd75754365a32b65a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
注:若选择不同的组合分别作答,则按第一个解答计分.
您最近一年使用:0次
9 . 如图,
是圆锥的母线,延长底面圆
直径
到点
,使得
,直线
与圆
切于点
,已知
,二面角
的大小为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/5/86abcc18-ea88-48d6-b547-310460ecc340.png?resizew=174)
(1)求该圆锥的侧面积;
(2)若平面
平面
,求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51dc424cdea009615f880f54bd2f09f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9708a0668136cc28d035fbf295e87a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/5/86abcc18-ea88-48d6-b547-310460ecc340.png?resizew=174)
(1)求该圆锥的侧面积;
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d96357a07048ba79b8c84097d359d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba759550d6c10ffd2922b936888f3973.png)
您最近一年使用:0次
2023-04-03更新
|
835次组卷
|
2卷引用:辽宁省丹东市2023届高三总复习质量测试(一)数学试题
名校
解题方法
10 . 如图所示的几何体为一个正四棱柱被两个平面
与
所截后剩余部分,且满足
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/1477b758-6170-42d8-b055-c1aacdcbecac.png?resizew=185)
(1)当
多长时,
,证明你的结论;
(2)当
时,求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72406478fda1c6e3b8052467385a3bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09219dbd440c70d66bf2bf8b4c2bfe2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46264ad39c95ef05658e3fa15373c6d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37cb657446616b7d679dfd9d2bbef5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2743a47b0c3e422512b4c76cc7112232.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/1477b758-6170-42d8-b055-c1aacdcbecac.png?resizew=185)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79216c6a32bb699aeb36144da020490.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51bb339ba41929e8f693b3618d5ee4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72406478fda1c6e3b8052467385a3bc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09219dbd440c70d66bf2bf8b4c2bfe2f.png)
您最近一年使用:0次
2023-03-10更新
|
922次组卷
|
4卷引用:辽宁省名校联盟2023届高三下学期3月份联合考试数学试题