如图,在正三棱柱
中,
点
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/997a78f2-b661-46bc-bbd6-bef587a0f1c1.png?resizew=152)
(1)求异面直线
与
所成角的大小;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/1/997a78f2-b661-46bc-bbd6-bef587a0f1c1.png?resizew=152)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbc96c20ebba91031a1c54037fe651c.png)
21-22高三上·上海浦东新·期中 查看更多[1]
(已下线)上海市华东师范大学第二附属中学2022届高三上学期期中数学试题
更新时间:2023-01-29 17:07:38
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解答题-问答题
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名校
【推荐2】如图,在
中,点
在边
上,
,
,
.
;
(2)若
的面积是
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb2628f6881365c283fc7291d354c63b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5064f5ce5ac8428e277fd578da84ec6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe8bbf74eb48e8a6774dec0c79cd6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac3c1375c64dceef45846308a418cf7f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2cc5f8cec8c498aa12c99c04e1c97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解答题-证明题
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解题方法
【推荐1】在正方体
中,求证:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/715916c3-f07a-405f-b7af-e13f114397e9.jpg?resizew=185)
(1)求异面直线
与
所成角;
(2)平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/715916c3-f07a-405f-b7af-e13f114397e9.jpg?resizew=185)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace37b88d4fb2db252d449fa6c5b4993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
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【推荐2】如图,已知四棱锥
,底面四边形
为正方形,
,M,N分别是线段
、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/803c6332-d361-4471-ab6d-525ad9c50821.png?resizew=196)
(1)求证:
∥平面
;
(2)求异面直线MN与BC所成角的大小.
![](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/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/803c6332-d361-4471-ab6d-525ad9c50821.png?resizew=196)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求异面直线MN与BC所成角的大小.
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【推荐1】如图,在四棱锥
中,平面
底面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/270077b8-5dd4-41db-8ca5-7eb1f21495bf.png?resizew=186)
(1)证明:
;
(2)求
与平面
所成的角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2c4cc37d6ba218107c9c5d820740fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16aad38b43462ca7a8fb9bc9484ad3a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28b72bdde2a97b03b7b5cb9db0ef5b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b82fa8f506f8099ca06c36c706db479.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3970fd226b8ced00ec88c913ed33fe5c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/270077b8-5dd4-41db-8ca5-7eb1f21495bf.png?resizew=186)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af5901aaf35b4d13364f81bef9004f6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
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解题方法
【推荐2】在正四棱柱
中,已知
,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/c6c5282bc1ea20767a6c092c22c761ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf9628142422a4884bd59538da6d312.png)
您最近一年使用:0次