名校
1 . 如图,在四棱柱
中,底面
和侧面
均是边长为2的正方形.
.
(2)若二面角
的大小为
,求
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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d56889f2417c8449b7ed31a03550d24.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c6ee40dff32baf8ffbf3cd4562c25a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
您最近一年使用:0次
2 . 如图1,在平面五边形
中,
,且
,
,
,
,将
沿
折起,使点
到
的位置,且
,得到如图2所示的四棱锥
.
(1)求证;
平面
;
(2)若
,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3aafd2e9983c478261f5d6cd8d5c027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37f210d9a0dddb66fe41fa057b6820b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025fa58b905703c01afa35a31ae22447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b1cf3846460c33132cf74fe93f9371d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d89a7eaa8e282efd9406ee958e061c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fd0b59a8d94c6e0b7a89c43f048247.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/2/43921fb2-40f4-4014-8fc2-1aec35f7e5ac.png?resizew=419)
(1)求证;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db807b09cc550f476b3f8fa0c6a14425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1364213f546b37f8764ddcb59e36ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
您最近一年使用:0次
2024-04-08更新
|
936次组卷
|
2卷引用:辽宁省鞍山市第六中学2024届高三下学期第二次质量检测数学试题卷
3 . 如图所示,在梯形
中,
,
,
,
平面
,
,
,
,
为
中点.
平面
;
(2)证明:
;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fb3e724d5ebb26d9f4ffa41ab8c9ce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89ee6576c35c682bcb0eff43bd958d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f95475bfc06e884754eb4a455c3f434e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/313e4c908bbce0d1654cc3d35df072f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbb2dce15f3d0fe839688575d2a8ff8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3aefe4c9addf498593cef19d2dac7c0.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/07b415e29be8abac18f80ac53f6b2027.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3165caf41af582b626fb176438bb1568.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281db65d019f6f77dc0dfcc675ce93d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4984ee07d47dbcc4705137cd6d931d8.png)
您最近一年使用:0次
名校
4 . 如图,已知线段
为圆柱
的三条母线,
为底面圆
的一条直径,
是母线
的中点,且
.
平面DOC;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1921b3559a5f73426f0d78e401ecc75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.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/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d9e45361c2504173963bb9687e1f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e5981445b6f2a6c58974158d96a4de.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eddaf3f33bd9a99162c061c9dd99aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
您最近一年使用:0次
2024-06-11更新
|
433次组卷
|
2卷引用:辽宁省沈阳铁路实验中学2024届高三第八次模拟考试数学试题
解题方法
5 . 如图,在四棱锥
中,
平面
,四边形
是正方形,
,E,F分别在棱PB,PD上,且
平面
.
(2)求平面
与平面
夹角的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
您最近一年使用:0次
6 . 已知四棱锥
中,底面
是矩形,
,
.
平面
;
(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/c2b51401875599d32a2ec41b70ac75e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae4011a59f40f68793bb41a7982b93c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d07f36efcb9d203267d7c0409720cf.png)
您最近一年使用:0次
2024-05-20更新
|
1734次组卷
|
3卷引用:辽宁省2024届高三下学期二轮复习联考(二)数学试题
名校
7 . 如图,在三棱锥
中,平面
平面
,且
,
,点
在线段
上,点
在线段
上.
;
(2)若
平面
,求
的值;
(3)在(2)的条件下,求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58443bda69348e6e586774c3109b9f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137631ed65a2301255a7e3c5ef44828e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281db65d019f6f77dc0dfcc675ce93d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02ba9d3698ec699f3b61456f4c9830d.png)
(3)在(2)的条件下,求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1956db288a5a3b8c97d2539e9e5e4f85.png)
您最近一年使用:0次
2024-01-10更新
|
1848次组卷
|
6卷引用:辽宁省沈阳市2023-2024学年高三上学期教学质量监测(一)数学试题
辽宁省沈阳市2023-2024学年高三上学期教学质量监测(一)数学试题吉林省通化市梅河口市第五中学2024届高三上学期期末数学试题(已下线)第5讲:立体几何中的动态问题【练】浙江省杭州学军中学紫金港校区2023-2024学年高二上学期期末数学试题(已下线)专题04 立体几何(已下线)信息必刷卷02(江苏专用,2024新题型)
名校
8 . 如图,在四棱锥
中,
底面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8137ebd3ff7cbf25f71c270ceda9c390.png)
.
(1)求证:
平面
.
(2)若平面
与平面
的夹角的余弦值为
,求点A到平面
的距离.
![](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/8137ebd3ff7cbf25f71c270ceda9c390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/400b51a840a7b275ae90638962d9458b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/29/72d166ca-49ba-482a-9d73-9dcf1e95ff5b.png?resizew=129)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd3bd9c2db8c9f3cb8c6c7d7cbf5465.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b34cf4760da098099493d4627dacb878.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2024-02-24更新
|
275次组卷
|
9卷引用:辽宁省新民市第一高级中学2021-2022学年高二上学期10月月考数学试题
辽宁省新民市第一高级中学2021-2022学年高二上学期10月月考数学试题福建省宁化第一中学2021-2022学年高二上学期开学考试数学试题河北省唐山市滦南县第一中学2021-2022学年高二上学期10月月考数学试题新疆乌苏市第一中学2022-2023学年高二上学期线上第二次月考数学试题河北省唐山市开滦第二中学2023-2024学年高二上学期10月月考数学试题安徽省安庆市怀宁县高河中学2023-2024学年高二上学期第三次月考数学试题广东省湛江市雷州市第二中学2023-2024学年高二下学期开学考试数学试题广东省深圳市深圳科学高中2023-2024学年高二下学期开学考试数学试题河南省焦作市第十一中学2023-2024学年高二上学期11月月考数学
9 . 如图多面体ABCDEF中,面
面
,
为等边三角形,四边形ABCD为正方形,
,且
,H,G分别为CE,CD的中点.
;
(2)求平面BCEF与平面FGH所成角的余弦值;
(3)作平面FHG与平面ABCD的交线,记该交线与直线AD交点为P,写出
的值(不需要说明理由,保留作图痕迹).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1056cd2db035cbfcce4935ffec20030a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eaceb8d6c6927e14d9ac7a557a2b11d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee73452ee4d5437f1399f1235b95e55f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36896e2033dd49401aca07a4a1e1d267.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b9d0c688e55286443c9974797fc647f.png)
(2)求平面BCEF与平面FGH所成角的余弦值;
(3)作平面FHG与平面ABCD的交线,记该交线与直线AD交点为P,写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb5391d00655e9e4ee30fe9934b2f02c.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,在四棱台
中,底面
为平行四边形,侧棱
平面
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/10/6e2380fb-fe87-4133-935f-1105005e3c3c.png?resizew=183)
(1)证明:平面
平面
;
(2)若四棱台
的体积为
.求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef492e98c4b063900c44840112cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ddbb0422a136f45653c8c369f2d75fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ea40304f01152887644756b50c7df6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dbf31dfd36aa456a63bafea8bc1985.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/10/6e2380fb-fe87-4133-935f-1105005e3c3c.png?resizew=183)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24f4d3af06cd9eb023116e1956bf48ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)若四棱台
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54c33225ac80627fe1f63ba533922bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
您最近一年使用:0次
2024-06-07更新
|
789次组卷
|
2卷引用:辽宁省鞍山市第一中学2024届高三下学期八模数学试卷