1 . 如图,在四棱锥
中,底面为直角梯形,AD∥BC,∠BAD=90°,PA⊥底面ABCD,且PA=AD=AB=2BC=2,M、N分别为PC、CB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/b0c9772d-cc63-445a-980f-86e996e4a60c.png?resizew=175)
(1)求证:PB⊥平面ADMN;
(2)求BD与平面ADMN所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/16/b0c9772d-cc63-445a-980f-86e996e4a60c.png?resizew=175)
(1)求证:PB⊥平面ADMN;
(2)求BD与平面ADMN所成角的大小.
您最近一年使用:0次
2 . 如图,已知长方体
中,
,
,点
为
中点,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/6f6b9da4-bd71-4eab-9be9-3575a6003d0f.jpg?resizew=139)
(1)求直线
与平面
所成角的大小;
(2)求异面直线
与
所成角大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0de7e1ab7c0aae3e54766b75516787f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3f142ddf3f82a4588012c7d8692e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c783bab7586f60dc14d4f10b6d5b12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d05533a1de2a2d4ab2c5e694c90a9a78.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/6f6b9da4-bd71-4eab-9be9-3575a6003d0f.jpg?resizew=139)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cafd67f44a30e27db130e90ce1823fc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94aad4c2109f60fcbf5488a545b16c6c.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3acfd91be9979f627c48a059dd2e2b1.png)
您最近一年使用:0次
名校
3 . 如图,在多面体
中,
、
、
均垂直于平面
,
,
,
,
,
,
分别是线段
和
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/aa7900d4-a54b-4dc0-9f3b-b78aaaab53cb.png?resizew=139)
(1)求
与
所成角的大小;
(2)求二面角
的大小;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d17d14819681c455a91d7678742368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c122ca7141c43c15c783968f5f0dbc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2541f82b49c8a01194a686c0b73d85ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86c589939053ce21ce0a67cf40054a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/aa7900d4-a54b-4dc0-9f3b-b78aaaab53cb.png?resizew=139)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69418f38ada198be25a69cb651e33e04.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ebc359166c408c16803f160e73b099e.png)
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4 . 在四棱锥
中,底面
为直角梯形,
侧面
底面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/2aa2425c-c5fa-45a0-8a9c-3c673cb2a4a6.png?resizew=195)
若
中点为
.求证:
平面
;
若
,求直线
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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/003ed9a31cd7c06dbf6eba32471d60c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad60002dd582d79acd217b01f4fed21.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/2aa2425c-c5fa-45a0-8a9c-3c673cb2a4a6.png?resizew=195)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c34b18525831f3eda7bb90be0199b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed73ff29178dce04925ce192bb1d740.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2019-09-23更新
|
506次组卷
|
6卷引用:上海市浦东新区2019年高三下学期三模试卷数学试题
上海市浦东新区2019年高三下学期三模试卷数学试题2015届浙江省高三第二次考试五校联考理科数学试卷2015届浙江省高三第二次考试五校联考文科数学试卷2015-2016学年浙江省温州中学高二上期末数学试卷浙江省杭州市学军中学2020-2021学年高二上学期期末数学试题(已下线)【新东方】高中数学20210429—006【2020】【高二上】
名校
解题方法
5 . 如图,在四棱锥
中
底面
,
为直角,
,
,
分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/c6b4249c-089e-4421-ba08-965bce5f223c.png?resizew=229)
(1)试证:
平面
;
(2)求
与平面
所成角的大小;
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d123de7b759481a1e5c1c483d8d4a62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa713e7c111c50a3404e12303fd6e0d2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/c6b4249c-089e-4421-ba08-965bce5f223c.png?resizew=229)
(1)试证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b7f53c57025ae134e1a09b6f00192f.png)
您最近一年使用:0次
2019-09-23更新
|
790次组卷
|
2卷引用:上海市宝山区交大附中2018-2019学年高二下学期期中数学试题
6 . 如图(1).在
中,
,
,
,
、
分别是
、
上的点,且
,将
沿
折起到
的位置,使
,如图(2).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/08f9eacc-03f7-495b-8cb6-f16985a35f7d.png?resizew=298)
(1)求证:
平面
;
(2)当点
在何处时,三棱锥
体积最大,并求出最大值;
(3)当三棱锥
体积最大时,求
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87fd28b8b2bde9de5630a6106a6f762e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82957366f4c9272b6ee99126d4b6bf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f07107087ce4abdfa5fc68fe6fb62f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fffbf41f3890efb6956907ad3c4062a0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/08f9eacc-03f7-495b-8cb6-f16985a35f7d.png?resizew=298)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a148a5584e41408fc74f8bd386b5b8.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4c18aba9681a8475968248764d4c3a.png)
(3)当三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db4c18aba9681a8475968248764d4c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
解题方法
7 . 如图所示,在直角梯形ABCD中,已知
,
,
,
平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/4d6690cd-cf5d-41f7-a271-6bb2067f1a4b.png?resizew=162)
(1)求证:
平面VAC;
(2)若
,求CV与平面VAD所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1bed9e7cd7aa41d0cb0f9fc1ec5eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328cfccb5abfdb7b16e17b72457b9841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9c439e4e4e48b17e19e666d892216fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/31/4d6690cd-cf5d-41f7-a271-6bb2067f1a4b.png?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20336b6b81e224de6101d836075913ff.png)
您最近一年使用:0次
8 . 已知下图是四面体
及其三视图,
是
的中点,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/9a4a1c82-7818-41b4-afe7-329222729f55.png?resizew=409)
(1)求四面体
的体积;
(2)求
与平面
所成的角;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/5/9a4a1c82-7818-41b4-afe7-329222729f55.png?resizew=409)
(1)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2019-08-21更新
|
267次组卷
|
3卷引用:上海市复兴高级中学2019年5月高三模拟数学试题
9 . 如图所示,某地出土的一种“钉”是由四条线段组成,其结构能使它任意抛至水平面后,总有一端所在的直线竖直向上.并记组成该“钉”的四条等长的线段公共点为
,钉尖为
.
![](https://img.xkw.com/dksih/QBM/2019/8/21/2273588487520256/2273636012761088/STEM/805651fb-5927-46d4-b854-40b0fd2e9ccb.png)
(1)判断四面体
的形状,并说明理由;
(2)设
,当
在同一水平面内时,求
与平面
所成角的大小(结果用反三角函数值表示);
(3)若该“钉”着地后的四个线段根据需要可以调节与底面成角的大小,且保持三个线段与底面成角相同,若
,
,问
为何值时,
的体积最大,并求出最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cebb466d8642424bd583e8843ffe39.png)
![](https://img.xkw.com/dksih/QBM/2019/8/21/2273588487520256/2273636012761088/STEM/805651fb-5927-46d4-b854-40b0fd2e9ccb.png)
(1)判断四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb9e0ac9f76900e254817c8177ac7f9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1928def070e2f92b5351f55fbe8eda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fa157b4f65f3a9aa1f7f82de02e99e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4195334905e2f190f958dbf5951456f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa6e3afb5196decc6f087cbfe40cf8a.png)
(3)若该“钉”着地后的四个线段根据需要可以调节与底面成角的大小,且保持三个线段与底面成角相同,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b31bf4e2816798aa17735cb329f1b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1928def070e2f92b5351f55fbe8eda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625164153d89f3f6993a9af173f693e5.png)
您最近一年使用:0次
10 . 如图,在长方体
中,已知
,
,
为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/0cff17a6-3a0d-4b50-b057-08afbcc6ed33.png?resizew=123)
(1)求四棱锥
的体积;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37750daa8ba3b3fe3e9e2092f81c848.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa203719e01b3755a5d149191f9e3f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/0cff17a6-3a0d-4b50-b057-08afbcc6ed33.png?resizew=123)
(1)求四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4117625867a74cd022584500c76deca.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
2019-08-17更新
|
572次组卷
|
2卷引用:上海市青浦一中2018-2019学年高二第二学期期中数学试题