解题方法
1 . 如图,点
为
内一点,
,
,
,过点
作直线分别交射线
,
于
,
两点,则
的最大值为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01391b57f18b60a94042c43a99a3514.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ece75c1d3e6a4121852eff52e9790ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cedbf2b61559686dc80d20777c4baed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b480dda3eea0e0b3391890efcb783b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c918d711eda6a90831f7871d5916486d.png)
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2024-01-31更新
|
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3卷引用:河南省南阳市2024届高三上学期期终质量评估数学试题
河南省南阳市2024届高三上学期期终质量评估数学试题(已下线)第6章 平面向量及其应用 单元综合检测(难点)-《重难点题型·高分突破》(人教A版2019必修第二册)河北省石家庄一中东校区2023-2024学年高一下学期第一次月考数学试题
名校
解题方法
2 . 某景区为吸引游客,拟在景区门口的三条小路
之间划分两片三角形区域用来种植花卉(如图中阴影部分所示),已知
,
三点在同直线上,
.
,求
的长度;
(2)求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0a4acdf310a457a88865ac333b39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6faa911c990f351a9445f2ba0d731895.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28855a0db693584aabac1df99dfade3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267ace52b64e1e7dfc5211e033255b7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cfbcc59c3b72ec168d7b832d98c0b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-01-22更新
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5卷引用:广东省深圳外国语学校、执信中学2023-2024学年高三上学期期末校际联考数学试卷
广东省深圳外国语学校、执信中学2023-2024学年高三上学期期末校际联考数学试卷(已下线)考点13 正弦定理及应用 --2024届高考数学考点总动员【讲】(已下线)考点17 解三角形中的最值问题 --2024届高考数学考点总动员【讲】(已下线)第六章 平面向量及其应用章末综合达标卷-同步精讲精练宝典广东省江门市培英高级中学2023-2024学年高一下学期期中考试数学试题
名校
3 . 在
中,
,点A在线段
上,
,且
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/5d37d1b4-dd16-4b88-b978-1a1243ce1222.png?resizew=155)
(1)求
的值;
(2)求
的值和
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192bc3409ede90aa3c0014e35e095557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36de91a167e07f2ed72196dc44e641d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957d4fb16e614269435401922f33d088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5958e643273608cce9aa9c54d7316ba.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/9/5d37d1b4-dd16-4b88-b978-1a1243ce1222.png?resizew=155)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
名校
解题方法
4 . 在新农村建设中,某村准备将如图所示的
内区域规划为村民休闲中心,其中
区域设计为人工湖(点D在
的内部),
区域则设计为公园,种植各类花草.现打算在
,
上分别选一处E,F,修建一条贯穿两区域的直路
,供汽车通过,设
与直路
的交点为P,现已知
米,
,
,
米,
,
段的修路成本分别为100万元/百米,50万元/百米,设
,修路总费用为关于
的函数
,(单位万元),则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaa4beac0c303da8ea298b7effce1fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680bd6f250acb8b568510419b59d3e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731ac94d7d7af196a74d9aa5021cbb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21f808404463c108bea981ca900c15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc513822ba6e34a16a468450ce282b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd7229922fbb3ce09dada883f74fbb1.png)
A.![]() | B.![]() |
C.修路总费用最少要400万元 | D.当修路总费用最少时,![]() |
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4卷引用:2024年普通高等学校招生全国统一考试模拟试题数学试题(一)
2024年普通高等学校招生全国统一考试模拟试题数学试题(一)广东省珠海市第一中学2024届高三上学期期末模拟数学试题(三)(已下线)6.4.3 第3课时 余弦定理、正弦定理应用举例【第三练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)解三角形-综合测试卷B卷
2023·全国·模拟预测
解题方法
5 . 某在建小区为了提高绿化率,创造更美好的生活环境,计划再建一个四边形花坛(四边形
).已知
米,
.
(1)若
,
米,求
边的长;
(2)若
,求花坛面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/520f8abda6a85e7ef6f281fc2df853fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bca1e8ae99ea9db7fd79976c1d30b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8878eae05fba3ac75d733695959af67f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf10d92f20501e19d25f6f4159aab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73929da2f7b3138daf275ebb4add6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680bd6f250acb8b568510419b59d3e7.png)
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名校
解题方法
6 . 某中学开展结合学科知识的动手能力大赛,参赛学生甲需要加工一个外轮廓为三角形的模具,原材料为如图所示的
是边
上一点,
,要求分别把
的内切圆
,
裁去,则裁去的圆
的面积之和为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/35a18464-a501-497f-8700-cafb54eade7a.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ed1c410686ae1b30bf08a81b41796.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec3710595242f6b1edac668313b6777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6654182f3914d5d0d7b4c7a988fd17ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d096cd7bd8a5a2219fd7dd166bbb8460.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/25/35a18464-a501-497f-8700-cafb54eade7a.png?resizew=186)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-12-23更新
|
366次组卷
|
3卷引用:安徽省皖豫名校联盟2024届高中毕业班第二次联考数学试题
2023高三上·全国·专题练习
7 . 下列命题正确的是( )
①在
中,“
”是“
”的既不充分也不必要条件.
②在
中,
.
③在
中,角
,
,
所对的边分别为
,
,
,当
时,
为锐角三角形.
④在
中,
.
⑤在三角形中,已知两边和一角,则该三角形唯一确定.
①在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030492644674b93e88ed864277b0ea26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
②在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d80ccda367d3b6283735ffd356220e.png)
③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/73437ed2686e3a7a3b92ed0f2e73600a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
④在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd90b42d0781962b510eecc1ac36a2cb.png)
⑤在三角形中,已知两边和一角,则该三角形唯一确定.
A.①②③ | B.①②④ | C.③④⑤ | D.①④⑤ |
您最近一年使用:0次
8 . 如图,小刚同学从楼顶A处看楼下公园的湖边D处的俯角为
,看另一边B处的俯角为
,楼高
为
米,则楼下公园的湖宽
=____ m.(结果精确到1米,参考数据:
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225803a7818b0985a1b96d8e0a627251.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b31a14bd2a972f43d7a26a99589ad083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06fc7811f9525e8b8c833746d6af5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb1a54045c98f6963fcffed8877f1654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/109f68040c0de4a3967b54615288636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac08346b8da027831bd22e2ce4d035e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02206efcf2cae6ea7368f2b0ffaf881d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/20/0ec9bf19-2c26-48bb-a2b5-006d3efa34da.png?resizew=167)
您最近一年使用:0次
2023高三上·全国·专题练习
名校
解题方法
9 . 在某海域开展的“海上联合”反潜演习中,我方军舰要到达C岛完成任务.已知军舰位于B市的南偏东
方向上的A处,且在C岛的北偏东
方向上,B市在C岛的北偏东
方向上,且距离C岛
此时,我方军舰沿着
方向以
的速度航行,问:我方军舰大约需要多长时间到达C岛?(参考数据:
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9107007366104f89f6f2b02862e2fab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fc8c4c300d672fd1ffacb92a78bbb99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c6c656fb08ad41bbb2dd0ace5aeb58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1844ed5bb2cd2dd4000782f3e42aed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a325f8f0c9e44be7ca832199afddb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460317e7c26f95b9b29cfe1a89b796d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef485c375127c3e304c6bff68ce7437.png)
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2023-12-20更新
|
588次组卷
|
3卷引用:第四章 三角函数与解三角形 第七节 解三角形应用举例
(已下线)第四章 三角函数与解三角形 第七节 解三角形应用举例新疆维吾尔自治区伊犁哈萨克自治州霍尔果斯市苏港中学2023-2024学年高一下学期4月月考数学试题四川省绵阳南山中学2023-2024学年高一下学期期中考试数学试题
解题方法
10 . 已知三角形
,
(1)
,三角形的面积
,求角
的值;
(2)若
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e842fe98ec9ded46916a7443969495e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/577b2110970dd65a5cf5c8a2c029d376.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe86b7070c396441232912c96238d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3578b63c5903089595bf324c809a997c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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