解题方法
1 . 在
中,内角
的对边分别为
.
(1)求
;
(2)若
,点
在边
上,且
,求
面积的最大值.
![](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/764cdc5a02526e94b655c91288b7e903.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebc89442384b8022b2d47cd596a3177f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
2023-11-09更新
|
513次组卷
|
2卷引用:重庆市渝中区2024届高三上学期期中数学试题
名校
2 . 已知
是圆
上动点,
是圆
的上两点,若
,则
的范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421fd161803a25b64a44b392fbaa670c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d97cd2c6e80848401fe98c3247b8329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd79ea6078a73c1e7ec4769e5546abec.png)
您最近一年使用:0次
名校
解题方法
3 . 设
中角
所对的边分别为
,
,
,
为
边上的中线;已知
且
,
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
______ .
![](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/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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e408c1ae7f1c237ba8323daa6f993fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab277f04a083623646c31dcab4fa6598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
您最近一年使用:0次
2023-07-05更新
|
1013次组卷
|
5卷引用:重庆市巴蜀中学校2022-2023学年高一下学期期末数学试题
重庆市巴蜀中学校2022-2023学年高一下学期期末数学试题四川省宜宾市叙州区第二中学校2023-2024学年高二上学期开学数学试题四川省眉山市彭山区第一中学2023-2024学年高二上学期开学考试数学试题(已下线)【讲】专题6 正弦定理、余弦定理综合问题(已下线)【高一模块一】难度6 小题强化限时晋级练 (中等3)
名校
解题方法
4 . 已知
的三内角A,
,
所对边分别是
,
,
,且满足
.
(1)证明:
是等腰三角形;
(2)若点
是边
上一点,
,
,
,求边
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/00aaf01b9d5eebf21971aa71ed461129.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31c6b3df0ebf6f111eb076a54eef7d0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34a4c608ab623b1c1bd591a1dea3f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879de8f9e04cd5da9e086902c2ad3c13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
5 . 已知点D、G为
所在平面内的点,
,
,记
分别为
、
的面积,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b432c1dd5c0d343bbc80b9fc77611c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1341c228b360108b6ae2d5bee95a8ba8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e6909d31fe626aea9e0b51deb10fa05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d11746005a0e806f2d27f89e3d9e9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2586c630df0501852675eb552d78d2ce.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-05-19更新
|
1066次组卷
|
5卷引用:重庆市巴蜀中学校2022-2023学年高一下学期期中数学试题
重庆市巴蜀中学校2022-2023学年高一下学期期中数学试题四川省南充市嘉陵第一中学2022-2023学年高一下学期第三次月考(6月)数学试题(已下线)专题4-1向量性质与基本定理应用-2(已下线)专题突破:奔驰定理与三角形面积问题-同步题型分类归纳讲与练(人教A版2019必修第二册)(已下线)模型6 向量面积比模型
名校
解题方法
6 . 某同学在查阅资料时,发现一个结论:已知O是
内的一点,且存在
,使得
,则
.请以此结论回答:已知在
中,
,
,O是
的外心,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6775bea8fabfdc16ca55ceb1e6f8ba4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4a9c6bcfb1f63e1e57cccbcfb07e885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844f65ab3bba2ca34cd53d84b148c277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcdaf0d5ffc528a3cd85c79e3317c440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d10072660396c4821badfd7311389e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a1e4e464e378f38aa3e9b56196bd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96724b211bf3e56d588bd430aa3f2894.png)
您最近一年使用:0次
2023-05-19更新
|
1140次组卷
|
4卷引用:重庆市巴蜀中学校2022-2023学年高一下学期期中数学试题
重庆市巴蜀中学校2022-2023学年高一下学期期中数学试题(已下线)模块四 专题2 小题进阶提升练(4)(北师大版)(已下线)第五篇 向量与几何 专题13 奔驰定理 微点1 奔驰定理(一)湖北省宜昌市部分省级示范高中2023-2024学年高一下学期期中考试数学试题
名校
解题方法
7 . 已知等腰
中,
,且
,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff214d99784c6b23b7784bdaf3ed37a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9e6ef1f8e6109c04b00f3ce17aa40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6c52e7db54c99c07fff909e3f9b20d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa2ad2ecbe7694e10627492a2fa62b9.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
名校
解题方法
8 . 在
中,
为边
上一点,
,
,若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
________ .
![](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/833cfda415649b832cc136caed392753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d54e182a943f960a1885b8556d07a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70799f7fea1ec37fd0517a8722dca19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a36ec31cfd615abfbee3ed2f4a1d8883.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae248960d8c1677cf948f8251275e863.png)
您最近一年使用:0次
2021-01-23更新
|
1231次组卷
|
8卷引用:重庆市求精中学2022届高三上学期一诊模拟数学试题
重庆市求精中学2022届高三上学期一诊模拟数学试题江苏省连云港市新海高级中学2020-2021学年高三上学期期末数学试题(已下线)专题17 解三角形(客观题)-2021年高考数学(文)二轮复习热点题型精选精练(已下线)专题18 解三角形(客观题)-2021年高考数学(理)二轮复习热点题型精选精练(已下线)专题17 解三角形(客观题)-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)(已下线)专题9.3《解三角形》(B卷提升篇)-2020-2021学年高一数学必修第四册同步单元AB卷(新教材人教B版)(已下线)数学-2021年高考考前20天终极冲刺攻略(二)(新高考地区专用)【学科网名师堂】 (5月23日)重庆市渝南田家炳中学校2024届高三上学期10月检测数学试题
名校
9 . 已知点P为△ABC内的一点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ebc6ae529a0ee4e6e058f58ae127094.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c6e7f37cd2f95cdf7ccf048c81bb45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ebc6ae529a0ee4e6e058f58ae127094.png)
您最近一年使用:0次