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1 . 在
中,内角
所对应的边分别是
,若
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf2d3c6d20ec680b233344a0be893ef4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47e66258d3c21dd9bf44dab2c960afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-02-19更新
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8卷引用:内蒙2023届古高三仿真模拟考试理科数学试题
内蒙2023届古高三仿真模拟考试理科数学试题吉林省长春市农安县农安高级中学2022-2023学年高一下学期4月月考数学试题福建省福州延安中学2022-2023学年高一下学期期中考试数学试题江苏省镇江市四校(扬中二中,句容实验高中等)2022-2023学年高一下学期5月联考数学试题(已下线)重难点专题01 正弦定理与余弦定理-2022-2023学年高一数学重难点题型分类必刷题(人教B版2019必修第四册)(已下线)第四章 三角函数与解三角形 第六节 第一课时 正弦定理与余弦定理(一)第11章《解三角形》单元达标高分突破必刷卷(基础版)云南省丽江市第一高级中学2022-2023学年高一下学期四月月考数学模拟试题
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2 . 在三角形ABC中,内角A,B,C的对边分别是a,b,c.若
,
,
,则C=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/036b23c94e305faaa1283996edc5b30c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
3 . 在
中,
分别是角
的对边,
满足
,若
,则
面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f12d1c74baba98e36164ffdedfc36828.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知正方体
的棱长为4,M,N分别是侧面
和侧面
的中心,过点M的平面
与直线ND垂直,平面
截正方体
所得的截面记为S,则S的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
5 . 在
中,内角A,B,C所对的边分别是a,b,c.若
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb40b8581f9822977f82af38b979069d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
6 . 如图,在四棱锥
中,四边形
是正方形,
平面
,E是棱
的中点,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/14/524ca8b7-c350-496e-afa1-2c00266b4b7f.png?resizew=154)
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181c84766862354d0df023fb85a72373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/14/524ca8b7-c350-496e-afa1-2c00266b4b7f.png?resizew=154)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 空间四边形
的两对边
,
、
分别是
、
上的点,且
,
,则
与
所成角大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e0f9d0d28bfb81ad132e0064402573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea2e6618b5423b14a547cd06a2118b62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/759451b6dd9c0e2d7cb1fbcbb85cc25e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.30° | B.45° | C.60° | D.90° |
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8 . 已知
、
、
,则
的面积为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f6dcd362a44588747e88b206e7c5ca4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8009b3d5d8c1013f83d98d54095c5171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52f0d7398328ba3b49aed74c3e7713f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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22-23高三上·河南·期末
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解题方法
9 . 在
中,角
所对的边分别为
,面积为
,且
.当
取得最大值时,
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9a3cfa4468c7388d41ff814f001d22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca69890d870ac9a79fe891ff57396e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa6361e919ac07ee6ed642556e1d1ae.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-01-15更新
|
921次组卷
|
6卷引用:河南省名校联盟2022-2023学年高三上学期1月新未来联考理科数学试题
(已下线)河南省名校联盟2022-2023学年高三上学期1月新未来联考理科数学试题河南省信阳高级中学2022-2023学年高三上学期期末考试理科数学试题(已下线)第02讲 正弦定理和余弦定理12种常见考法归类(2)(已下线)专题03:解三角形中的值域与最值问题-1陕西省渭南市瑞泉中学2024届高三第六次质量检测数学(理科)试题第十一章 解三角形(A卷·基础提升练)-【单元测试】2022-2023学年高一数学分层训练AB卷(苏教版2019必修第二册)
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10 . 在
中,内角
所对的边分别为
,点
为
的中点,
,
,且
的面积为
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/fde9a170-30b6-44bb-bcc3-1dd5a22336fa.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02aae30188781f0a32d6f830727d0b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/13/fde9a170-30b6-44bb-bcc3-1dd5a22336fa.png?resizew=150)
A.![]() | B.1 | C.2 | D.3 |
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2023-01-11更新
|
923次组卷
|
6卷引用:6.4.3.2正弦定理(课件+作业)
(已下线)6.4.3.2正弦定理(课件+作业)(已下线)11.2 正弦定理(1)四川省宜宾市叙州区第一中学校2023届高三二诊模拟文科数学试题(已下线)第四章 三角函数与解三角形 第六节 第二课时 正弦定理与余弦定理(二)广西柳州市2023届高三上学期第二次模拟数学(文)试题(已下线)第11章:解三角形 章末检测试卷-【题型分类归纳】2022-2023学年高一数学同步讲与练(苏教版2019必修第二册)