名校
1 . 如图,在三棱柱
中,
,
,平面
平面
,
与
相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/3c637827-0d3e-4a56-8fea-99f5fd94a2b3.png?resizew=177)
(1)求证:
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05912af6afe9d3873e1ab45721a0253e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f5a805909220307cba03071696238d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/140088b0cb73812aa9d523c44559298a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/2/3c637827-0d3e-4a56-8fea-99f5fd94a2b3.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba985fb50a9078a839b66bf1d1eadea9.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32bbdf5dbf9df96742624ada95c36146.png)
您最近一年使用:0次
2019-10-21更新
|
714次组卷
|
3卷引用:湖北省襄阳市第四中学2019-2020学年高三上学期9月联考数学(理)试题
2 . 如图,在四棱锥P-ABCD中,底面ABCD是平行四边形,AB=2AD=2,∠DAB=60°,PA=PC=2,且平面ACP⊥平面ABCD.
(Ⅰ)求证:CB⊥PD;
(Ⅱ)求二面角C-PB-A的余弦值.
(Ⅰ)求证:CB⊥PD;
(Ⅱ)求二面角C-PB-A的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/466e950a-0203-486d-bb0f-d3c70f3bfbcd.png?resizew=171)
您最近一年使用:0次
2019-04-28更新
|
457次组卷
|
2卷引用:【市级联考】湖北省武汉市2019届高三4月调研测试数学(理)试题
3 . 如图,三棱锥
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/74bc1ee7-06c0-4723-87f0-0115ef232b1b.png?resizew=182)
(1)求证:
;
(2)求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9b8e7befcb7881c294070175b1a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b94d1563aaaef62c1643614a732931e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eea78bf026d76f1cb9cc3dc9349a193.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/74bc1ee7-06c0-4723-87f0-0115ef232b1b.png?resizew=182)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
名校
4 . 如图,在三棱柱
中,各个侧面均是边长为
的正方形,
为线段
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/a4a8e442-a867-4eda-8d10-f512c409c5a6.png?resizew=150)
(1)求证:直线
平面
;
(2)求直线
与平面
所成角的余弦值;
(3)设
为线段
上任意一点,在
内的平面区域(包括边界)是否存在点
,使
,并说明理由.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/a4a8e442-a867-4eda-8d10-f512c409c5a6.png?resizew=150)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0c0d0497f5d3f317504d59cc19a4c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588eb9393564a33552c4b2e8de837ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588eb9393564a33552c4b2e8de837ca5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60476ff27b009fae801d39d0d31a2f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5260b9927d0ad83b03c1e24c586e98.png)
您最近一年使用:0次
2019-07-15更新
|
722次组卷
|
3卷引用:湖北省省实验、武汉中学等学校联考2018-2019学年高一下学期期末数学试卷
5 . 如图,四棱锥
的底面
为平行四边形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/64c6e922-a100-4133-bf1f-67755fc0d6c0.png?resizew=164)
(1)求证:
;
(2)求二面角
的余弦值.
![](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/647811d1ab49db2c31571d4cbd30768a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31932743a516a00320e7143c439d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/64c6e922-a100-4133-bf1f-67755fc0d6c0.png?resizew=164)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b07e317ffe7859e81b42ef4970e344a.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a7ba7cd0c654714c967a900513ba16.png)
您最近一年使用:0次
名校
6 . 如图,三棱柱
中,侧面
为菱形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/4c9c8269-3f64-4aa0-bae4-64ce6fb6a3b5.png?resizew=202)
(1)证明:
;
(2)若
,
,
,求二面角
的余弦值的绝对值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870cee007535b979d35bc7feab75616.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/4c9c8269-3f64-4aa0-bae4-64ce6fb6a3b5.png?resizew=202)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ee347187fbbfe9e8a6faf286795d79.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7fd49bb962841b4575805030e19add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f2e238b2757353026133bbe495645e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69418f38ada198be25a69cb651e33e04.png)
您最近一年使用:0次
2019-07-12更新
|
709次组卷
|
10卷引用:【全国百强校】湖北省荆州中学2018-2019学年高二上学期期末考试数学(理)试题
【全国百强校】湖北省荆州中学2018-2019学年高二上学期期末考试数学(理)试题2015-2016学年河南省许昌高中等校高二下第一次联考理科数学试卷四川省成都市第七中学2017届高三三诊模拟数学(理)试题四川省遂宁市2017-2018学年高二上学期期末考试数学理试题河北省武邑中学2017-2018学年高二上学期期末考试数学(理)试题河南师范大学附属中学2017-2018学年高二4月月考数学(理)试题四川省遂宁市2017-2018学年高二上学期教学水平监测数学(理)试题【全国百强校】广东省湛江第一中学2018-2019学年高二上学期第二次大考数学(理)试题(B卷)四川省成都市第七中学2019年高三零诊模拟数学(理)试题河北省沧州市肃宁一中2019-2020学年高二上学期第四次月考数学试题
7 . 如图,已知四边形ABCD为梯形,AB∥CD,∠DAB=90°,BDD1B1为矩形,平面BDD1B1⊥平面ABCD,又AB=AD=BB1=1,CD=2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/ad9cec3e-69c6-4fca-adaa-37ed612f92ab.png?resizew=212)
(1)证明:CB1⊥AD1;
(2)求B1到平面ACD1的距离.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/ad9cec3e-69c6-4fca-adaa-37ed612f92ab.png?resizew=212)
(1)证明:CB1⊥AD1;
(2)求B1到平面ACD1的距离.
您最近一年使用:0次
名校
8 . 如图1,已知四边形BCDE为直角梯形,
,
,且
,A为BE的中点
将
沿AD折到
位置
如图
,连结PC,PB构成一个四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/978c47e0-2de3-4b02-b813-924ff1bbe43f.png?resizew=388)
(Ⅰ)求证
;
(Ⅱ)若
平面
.
①求二面角
的大小;
②在棱PC上存在点M,满足
,使得直线AM与平面PBC所成的角为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5687fd83c7f1059caa39b02a131cca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966a75dc7757a928a89dab537a451cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a7b4edf05c44bafd871ce6293bfb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3a544f2fcfc8c1525d8bd3b3d04e43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f23f5768d2fdcddfe738f5a81fe9875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3697e8fe366ffbdf19025650ed2e4482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/978c47e0-2de3-4b02-b813-924ff1bbe43f.png?resizew=388)
(Ⅰ)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a615c418bbc4a2c4f04fcf84cbb9ccb0.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cb3f9a5da641be35117fd35ba07a6aa.png)
①求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8282f7fe4c82900a207e7267bf43b300.png)
②在棱PC上存在点M,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7772c42e409808c5ef1f031e382a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe8140a38ee6b0b28a5b661f8b1f3d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2019-05-18更新
|
1782次组卷
|
6卷引用:湖北省襄阳市宜城市第一中学2023-2024学年高二上学期9月月考数学试题
名校
9 . 如图所示,三棱柱
中,侧面
为菱形,
在侧面
上的投影恰为
的中点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/1649b8b1-c543-4a22-98ab-9e2cf5cd918d.png?resizew=222)
(1) 证明:
;
(2) 若
,且三棱柱
的体积为
,求三棱柱
的高.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b28628f8495115d6f85bd0243a33434d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/1649b8b1-c543-4a22-98ab-9e2cf5cd918d.png?resizew=222)
(1) 证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8db87b41df9d3c83d2810a4265d768d3.png)
(2) 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7fd49bb962841b4575805030e19add.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42ec13ca7115ccd73a9d793758f1c170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
您最近一年使用:0次
2019-09-07更新
|
1425次组卷
|
4卷引用:湖北省鄂南高中2019-2020学年高三上学期10月月考数学(文)试题
湖北省鄂南高中2019-2020学年高三上学期10月月考数学(文)试题2020届湖北省武汉市新洲区高三10月联考试题文科数学安徽省合肥一中、安庆一中等六校教育研究会2020届高三上学期第一次素质测试数学(文)试题(已下线)2020届高三12月第01期(考点07)(文科)-《新题速递·数学》
10 . 如图,三棱锥
中,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/ebc07351-f3d1-4a4e-b17d-dc50af2306de.png?resizew=211)
(1)求证:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9b8e7befcb7881c294070175b1a554.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b94d1563aaaef62c1643614a732931e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eea78bf026d76f1cb9cc3dc9349a193.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/ebc07351-f3d1-4a4e-b17d-dc50af2306de.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8c14100a4f847b41b9148954116c.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796bbaeb8450404c2d146283562006e.png)
您最近一年使用:0次