名校
1 . 如图,四边形
为矩形,平面
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/2291c52c-333b-4e2a-9b4d-f4935ce88a93.png?resizew=151)
(1)求证:
平面
;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/691dbdfcf0dfc86e8892eb9ff4edb764.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fde10d68d53e859e524ae9cfb9ce76c8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/2291c52c-333b-4e2a-9b4d-f4935ce88a93.png?resizew=151)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a5928c98b341b16d4b5a5b931d2929d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
您最近一年使用:0次
2024-02-18更新
|
265次组卷
|
2卷引用:北京市清华附中高22级2023-2024学年高二上学期期末数学试题
2 . 如图,在四棱柱
中,侧面
是正方形,平面
平面
,
,
,
为线段
的中点,
.
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a2e10a5aebe40a9018d5ee3ade7af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/555e29e445c95ddb514840f63fbb1d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fa5bb6d115af20e6e3eb2b7fd36bcd9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/1/13f8ed59-669e-4937-a9fb-5a77625888a9.png?resizew=150)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afabf56cc68ea438a890f9fea04b708e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2fecaad729e54dc1c9cea29c27d362b.png)
您最近一年使用:0次
2024-01-18更新
|
1085次组卷
|
2卷引用:北京市海淀区2024届高三上学期期末练习数学试题
名校
解题方法
3 . 已知三棱柱
中,侧面
底面
,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a2e10a5aebe40a9018d5ee3ade7af8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7b42f530db0143b64c381b876ad801.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bd2e101f851bb77cfa793f4038015cf.png)
A.充分而不必要条件 | B.必要而不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
2024-01-17更新
|
447次组卷
|
3卷引用:北京市海淀区2023-2024学年高二上学期期末练习数学试卷
名校
4 . 如图,在四棱锥
中,
,
是棱
上靠近点
的三等分点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/e1e7d25e-af0b-4ee3-adc6-a5896e5f1720.png?resizew=153)
(1)证明:
平面
;
(2)设平面
与平面
的交线为
,若平面
平面
,
,求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6fac6c785c339fba14205ca26eb6a15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/10/e1e7d25e-af0b-4ee3-adc6-a5896e5f1720.png?resizew=153)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
(2)设平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6c23afda5016ebbae7a9a5611c1039.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6546d9c27cc1d9d5c5cbd2fc294f6b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
您最近一年使用:0次
2024-01-04更新
|
477次组卷
|
2卷引用:北京市海淀区首都师范大学附属中学2023-2024学年高三上学期阶段练习(1月)数学试题
5 . 已知四棱锥的底面为梯形
,且
,又
,
,
,平面
平面
,平面
平面
.
(1)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6760e8ba8eb28ca7ad58dad93d79f9.png)
①;
②为二面角
的平面角.
您最近一年使用:0次
2023-05-26更新
|
1547次组卷
|
6卷引用:北京市海淀区人大附中2024届高三下学期寒假自主复习检测数学试题
北京市海淀区人大附中2024届高三下学期寒假自主复习检测数学试题(已下线)重难点突破02 利用传统方法求线线角、线面角、二面角与距离(四大题型)(已下线)第八章 立体几何初步(二)(知识归纳+题型突破)(2)-单元速记·巧练(人教A版2019必修第二册)北京市人大附中2023届高三三模数学试题陕西省榆林中学2022-2023学年高一下学期第二次月考数学试题(已下线)专题10 空间向量与立体几何-3