名校
解题方法
1 . 已知
,
,
分别是
的内角
,
,
的对边,且
.
(1)求
;
(2)若
,
的面积为
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fdafeea00eaa3053b56d176126d82b5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f787941cb1abfe9bb757276b765c0b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2a6776676c4da3b810bd81750985b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b12efb03327f461e868b2ea433f9b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
解题方法
2 . 在
中,角
,
,
所对的边分别为
,
,
,且
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd3b7513fdffeef54a745788f4dee890.png)
A.![]() | B.![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
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解题方法
3 . 若
,
,且
,则
的最小值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcbdcb52d7b9e7c54d8382f42e278fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7dc87628c486529f615d51675515d98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dedab547d3f1d4824d6b68f88ef4e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee4c25755e08df6c44fa0d2be441f709.png)
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4 . 已知
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375599bb5af70a041f6cc340cd0f6b2a.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a321112ae2829a4783f7e4a1f022183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f6e1956dd6542e48294576b328f7b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/375599bb5af70a041f6cc340cd0f6b2a.png)
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5 . 已知虚数
满足:
为实数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac28c87f38c36dd6ec2b85f06c97c95.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36878d65579af444e0dcde7ed8785f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac28c87f38c36dd6ec2b85f06c97c95.png)
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名校
解题方法
6 . 已知四棱锥
中,底面ABCD是梯形,
,
,
,
,
,M,N分别是PD,BC的中点.求证:
平面PBC;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee8ef58be8708144272538ee427fb92c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da35bb9885f79a36532f21139f9f99d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f33fa5152ba27f7b8a28890cefca219.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bf271d6475f5305bc922677b4cfe28c.png)
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2024-05-30更新
|
1831次组卷
|
3卷引用:江苏省南京市江宁高级中学2023-2024学年高一下学期第二次调研测试数学试题
江苏省南京市江宁高级中学2023-2024学年高一下学期第二次调研测试数学试题江苏省南通市2023-2024学年高一下学期5月质量监测数学试题(已下线)6.5.1直线与平面垂直-【帮课堂】(北师大版2019必修第二册)
名校
7 . 已知向量
,
则下列结论正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf863607285211cdc5903d08ac193b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a7f0f769015d2752819b132781e9c6.png)
A.若![]() ![]() |
B.存在![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2024-05-30更新
|
606次组卷
|
2卷引用:江苏省南京市江宁高级中学2023-2024学年高一下学期第二次调研测试数学试题
8 . 如图,在棱长为1的正方体
中,
为平面
内一动点,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/30/eb9c8e1e-d848-442a-a012-e482c7a7cdce.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/5/30/eb9c8e1e-d848-442a-a012-e482c7a7cdce.png?resizew=150)
A.若![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.对于给定的点![]() ![]() ![]() ![]() ![]() |
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9 . 由0,1,2,3,4组成无重复数字的三位偶数的个数是( )
A.24 | B.30 | C.36 | D.60 |
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名校
解题方法
10 . 若
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b858bf8f2529af040d134ab224963724.png)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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