名校
解题方法
1 . 在
中,内角
,
,
所对的边分别为
,
,
,
的面积为
,下列
有关的结论,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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.在![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
2 . 在
中,角
、
、
所对应的边分别为
,
,
,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/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/b4c337b7aaaf6fbc17283e0429f7b561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db69d3b511dfed066b7d01e48541ed9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1 | B.![]() | C.2 | D.4 |
您最近一年使用:0次
2021-07-26更新
|
631次组卷
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8卷引用:江苏省南京市第一中学2020-2021学年高一下学期期中数学试题
江苏省南京市第一中学2020-2021学年高一下学期期中数学试题(已下线)11.5 解三角形综合练习(提优) 2020-2021学年高一数学同步课堂帮帮帮(苏教版2019必修第二册)(已下线)小题好拿分期中考前必做30题(压轴版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)江西省萍乡市2017—2018学年度高一下学期数学期末考试试题(已下线)专题1.2+余弦定理(2)(重点练)-2020-2021学年高二数学十分钟同步课堂专练(苏教版必修5)河南省实验中学2021-2022学年高一下学期期期中考试数学试题第十一章 解三角形(B卷·能力提升练)-【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)河南省济源第一中学2022-2023学年高一下学期5月月考数学试题
名校
3 . 在
中,角
所对的边分别为
,已知
.
(1)求角
的值;
(2)若点
为
中点,且
,求中线
的最大值;
(3)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dedb4d2997a4ad2180be8d51a056f4.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab394a75f3e36a9c844002c84676b27.png)
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名校
解题方法
4 . 在①
、②
这两个条件中任选一个,补充到下面问题中,并进行作答.
在
中,内角
、
、
的对边分别为
、
、
,
,
, .
(1)求角
、
、
的大小;
(2)求
的周长和面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c67a4a0668afd0a1988d323f6cd0915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21147b32d0f8b8d66a7ba60f370bef66.png)
在
![](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/2b18494d898e9c51e05c16d02069ebbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7fa79a550591eb9e1bd07bced3a08fc.png)
(1)求角
![](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)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2021-07-23更新
|
799次组卷
|
11卷引用:江苏省南京市金陵中学2020-2021学年高一下学期期末数学试题
江苏省南京市金陵中学2020-2021学年高一下学期期末数学试题(已下线)专题05 解三角形——备战2021年高考理科数学之纠错笔记系列广东省佛山市南海区西樵高级中学2020-2021学年高一下学期第一次段考数学试题山东省青岛胶州市2019-2020学年高一下学期期末考试数学试题(已下线)专题6.5 《平面向量》单元测试卷-2021年新高考数学一轮复习学与练广东省实验中学2021届高三上学期第一次阶段考试数学试题江苏省镇江市八校2020-2021学年高三上学期期中联考数学试题福建省泉州第十六中学2021届高三上学期期中考试数学试题江苏省泰州市姜堰第二中学2020-2021学年高三上学期学情检测三数学试题四川省泸县第五中学2022-2023学年高一下学期期中数学试题江苏省2024年普通高中学业水平合格性考试数学全真模拟数学试题01
5 . 如图,在
中,点
在边
上,
,
,
,
,则
的长为_______ ..
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/35333abd7f02d663d15251bc5cbbf921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/514cc5a3a2fa2de84b6cb5e97108ad8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f254158aca62fcc19190a78e4fab459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23beaf54dbb388be47c529e468d0e4e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2021/7/1/2754931753500672/2770617945243648/STEM/9bcba5f9540f4a8697266d29515b1e2b.png?resizew=143)
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6 . 在
中,角
所对的边分别为
,角
的角平分线交
于点
,若
,且
,
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a60830802e2690afaa23a1ed0a684eb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0496afe407008f00098d5360c3cad538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d381136e3082c76d500c6ca4af2191b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5978b3692daed80e12a18b5a68ed2d0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-07-23更新
|
1227次组卷
|
4卷引用:江苏省南京市金陵中学2020-2021学年高一下学期期末数学试题
江苏省南京市金陵中学2020-2021学年高一下学期期末数学试题(已下线)专题6.10 解三角形综合练习(一)-2022届高三数学一轮复习精讲精练江苏省盐城市高级实验中学2023届高三三模数学试题(已下线)大招3 角平分线定理
名校
7 . 在
中,角
,
,
所对的边分别为
,
,
,以下说法中正确的是( )
![](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)
A.若![]() ![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2021-07-23更新
|
329次组卷
|
2卷引用:江苏省南京师范大学附属中学2020-2021学年高一下学期期中数学试题
名校
解题方法
8 . 《数书九章》是中国南宋时期杰出数学家秦九韶的著作,全书十八卷共八十一个问题,分为九类,每类九个问题,《数书九章》中记录了秦九韶的许多创造性成就,其中在卷五“三斜求积”中提出了已知三角形三边
,
,
求面积的公式,这与古希腊的海伦公式完全等价,其求法是:“以小斜幂并大斜幂减中斜幂,余半之,自乘于上,以小斜幂乘大斜幂减上,余四约之,为实,一为从隅,开平方得积.”若把以上这段文字写成公式,即
.现有
满足
,且
,请运用上述公式判断下列命题正确的是( )
![](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/96bd5fefb9a7c618d1ef8d73b3c43cd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12742a58429a71d3f295b724256a37e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/024bae8fe1437f7f99ee273b903236f9.png)
A.![]() ![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
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|
414次组卷
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2卷引用:江苏省南京市中华中学2020-2021学年高一下学期期末数学试题
9 . 在锐角
中,
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8e5ce6c55a720a332a08c07f1a89a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9563e5c29f03707996eb761fba29ce21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 在
中,
.
(1)若
,求
的值;
(2)设向量
,
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec569211c8d47b19c945e395e7395d99.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1aae237a9db73084d0c37a9324c016fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a24a8f5e8fb89381f8add6549170345.png)
(2)设向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd882cfac4d249d35c1863e65787925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6f3fb8582f03f22f12af648f4b6dba3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd85ca5ad669cb05fece9796a78938e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21bdea15993d7447c9bee28f7318bc9.png)
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