名校
1 . 如图,在四棱锥
中,底面
是菱形,
,
平面
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/4/19/2703291119230976/2773219163578368/STEM/cec21be6-3bce-4a70-a561-1fc46005085d.png)
(1)求证:
;
(2)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/26d4e574c9d139615d991a168cfbf63b.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/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2021/4/19/2703291119230976/2773219163578368/STEM/cec21be6-3bce-4a70-a561-1fc46005085d.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5d56d8170b764b80a672cd6c861921.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
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2021-07-27更新
|
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3卷引用:浙江省宁波市北仑中学2020-2021学年高二下学期期中数学试题
名校
2 . 如图,已知三棱锥
中,平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2020/6/23/2490954796163072/2491496351744000/STEM/6565f4af977740869167dfb8de6a8aee.png?resizew=200)
(1)证明:
;
(2)求直线
和平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eebd469dcd6a3b96a4b47215d61d155.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ef5ee4584144baf0e17a12e14efd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c70a167f1f96583de5f623f608f8535.png)
![](https://img.xkw.com/dksih/QBM/2020/6/23/2490954796163072/2491496351744000/STEM/6565f4af977740869167dfb8de6a8aee.png?resizew=200)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34b416412f982d9c6956b2229d6e3729.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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2020-06-24更新
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7卷引用:浙江省杭州市学军中学2021-2022学年高二上学期期中数学试题
浙江省杭州市学军中学2021-2022学年高二上学期期中数学试题浙江省2021届高三下学期4月高考模拟(6)数学试题浙江省临海市、乐清市、新昌县2020届高三下学期选考模拟考试数学试题浙江省台州市书生中学2020届高三下学期高考模拟数学试题浙江省杭州市临安中学2022届高三下学期仿真模拟数学试题山东省济宁市嘉祥县第一中学2020届高三第9次模拟考试数学试题(已下线)第35讲 利用传统方法解决立体几何中的角度与距离问题-2022年新高考数学二轮专题突破精练
名校
解题方法
3 . 如图,在四边形
中,
,以
为折痕把
折起,使点
到达点
的位置,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/c29e0c78-6351-4c42-9580-dc889bc1491c.png?resizew=141)
(1)证明:
平面
;
(2)若
为
的中点,二面角
等于60°,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aad2d7c7a8177255f745b3b8101b7dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d38cc7012c328f1f22aa793fe76d7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/4/c29e0c78-6351-4c42-9580-dc889bc1491c.png?resizew=141)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f35614aff055b98b76ca262f64e629d.png)
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2020-05-12更新
|
1704次组卷
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8卷引用:浙江省宁波市余姚中学2021-2022学年高二上学期期中数学试题
名校
4 . 如图所示,在四棱锥
中,底面
是边长为
的正方形,
是正三角形,
为线段
的中点,点
为底面
内的动点,则下列结论正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/c8e4783f-65eb-4a38-a08b-115bf1c107f1.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc4b17ce6e90cd3810a3696262e94c1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/c8e4783f-65eb-4a38-a08b-115bf1c107f1.png?resizew=189)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() |
D.若平面![]() ![]() ![]() ![]() ![]() ![]() |
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2020-04-06更新
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6卷引用:浙江省杭州市学军中学2021-2022学年高二上学期期中数学试题
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5 . 如图,在正方体ABCD﹣A1B1C1D1中,直线A1C与平面ABCD所成角的余弦值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/b9882877-70e0-4344-8af4-e920ebe1dbfe.png?resizew=134)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/b9882877-70e0-4344-8af4-e920ebe1dbfe.png?resizew=134)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-12-27更新
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5卷引用:浙江省嘉兴市第五高级中学2020-2021学年高二下学期期中数学试题
2019·浙江·一模
名校
6 . 三棱柱
中,
平面
,动点
在线段
上滑动(包含端点),记
与
所成角为
,
与平面
所成线面角为
,二面角
为
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a56f2e56229a722d1f40d74d3967a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70682f6196e6c1a08eb48da73e8919ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7 . 如图,在四棱锥
中,平面
平面
;
,
,
,
.
(1)证明:
平面
;
(2)求直线
与平面
所成的角的正切值.
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571786814783488/1571786820632576/STEM/1115d5fa62044b1bba25907fbdf5d41e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d7090639341730951c1bc3c9b6164e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e73ff18fab460a2bc8d21cc522527e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292d0b9ce587bd5df884a988c22ccba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd316249a2a4333a6e37ea6ba4c0e67b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71807a35b3170fce28ee6edf4c00d083.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571786814783488/1571786820632576/STEM/c2cb29b15ca045f2a9fbe2c234e80f46.png)
![](https://img.xkw.com/dksih/QBM/2014/6/20/1571786814783488/1571786820632576/STEM/ca689f29-036a-43b2-8f3c-3b3f3b64939f.png?resizew=231)
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2016-12-03更新
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5卷引用:浙江省杭州市第十四中学康桥校区2020-2021学年高二下学期期中数学试题
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