名校
解题方法
1 . 如图,在
中,角
所对的边分别为
,已知
,
的平分线
交边
于点
边上的高为
边上的高为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ada871ccdbd83b6ccbddbcd84521bc.png)
__________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7330af1eaa4fbb442ebc7b47be6b6d7a.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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0d44899ceb7b3137a82f2498c6d9b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bea1b93dcf0514f157720793da1a81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383d609af37a655a531e3e7441cd123e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa9e9cc8d1a0e6846523986552693cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73d287c4df5c0cac5a4931edb43b01d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88ada871ccdbd83b6ccbddbcd84521bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7330af1eaa4fbb442ebc7b47be6b6d7a.png)
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2024-06-16更新
|
219次组卷
|
3卷引用:河南省濮阳市2024届高三第三次模拟考试数学试题
名校
解题方法
2 . 在
中,角
的对边分别是
,且
.
(1)求
;
(2)若
面积为
,求
边上中线的长.
![](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/5d922477c350818a3f7f6b693e346ee5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca820a456491348e72587e4fe10bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
您最近一年使用:0次
2024-04-16更新
|
2745次组卷
|
5卷引用:福建省福州市2024届高三第三次质量检测数学试题
2024高二·全国·专题练习
名校
解题方法
3 . 如图,
是等边三角形,
是
边上的动点(含端点),记
,
.
(1)求
的最大值;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764509115979e9958101808383672ec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b6492fc7ac544c5cb196b3bee457d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226b1dc6b85b6b76c99420be4f82e1d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/adcd5c0e-fce4-457b-bb70-be053345eaee.png?resizew=152)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dbb8946dd3f6ef3e816da7fdca83993.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b2ac64b0463f3fcbb725ea7f59e45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833243568eaaf9053e68dee1e9289770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bb961bd7db3adb76af2d4cedb611bd7.png)
您最近一年使用:0次
名校
解题方法
4 . 已知
的内角
的对边分别是
.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/e6c4d3514020cd513c7a5a9e24eddebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea646f395a284441b6c338e10affc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb492f8cb1bca9927fd803bb178cd2d.png)
A.![]() | B.![]() | C.2 | D.3 |
您最近一年使用:0次
2024-03-27更新
|
1204次组卷
|
6卷引用:河南省焦作市2024届高三第二次模拟考试数学试题
河南省焦作市2024届高三第二次模拟考试数学试题河南省濮阳市2024届高三下学期第一次模拟考试数学试题(已下线)6.4.3.2?正弦定理15种常考题型归类(1)-高频考点通关与解题策略(人教A版2019必修第二册)(已下线)6.4.3.2 正弦定理——随堂检测辽宁省东北育才学校科学高中部2023-2024学年高一下学期期中考试数学试题(已下线)第二章 平面向量及其应用章末重点题型复习(2)-同步精品课堂(北师大版2019必修第二册)
名校
5 . 在
中,角A,B,C的对边分别为a,b,c.已知
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/867779cd-c585-4ca5-8784-c4e59e74fe75.png?resizew=158)
(1)求b的值;
(2)在边BC上取一点D,使得
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad09921d9904335a83078262ce62a473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/958b7b27a401f6b8352ae36e6e26d01f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/867779cd-c585-4ca5-8784-c4e59e74fe75.png?resizew=158)
(1)求b的值;
(2)在边BC上取一点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41350023da8aacd62eaae8599c6009cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
您最近一年使用:0次
2024高一下·全国·专题练习
6 . 在
中,已知内角
的对边分别为
,且
,解这个三角形.
![](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/bdec5c3934f6fa3681dfe7594e8400f6.png)
您最近一年使用:0次
7 . 在
中,
,
,延长
到点
,使得
,
,则
的长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52dee53b52430f53a726cda7fe9d6805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7f0401adb20a8b873d6997b2f6a236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2024-03-18更新
|
509次组卷
|
3卷引用:专题1.12平面向量及其应用-重难点突破及混淆易错规避(人教A版2019必修第二册)
(已下线)专题1.12平面向量及其应用-重难点突破及混淆易错规避(人教A版2019必修第二册)四川省大数据学考联盟2024届高三第一次质量检测数学(文科)试题四川省大数据学考联盟2024届高三第一次质量检测数学(理科)试题
2024·四川成都·模拟预测
名校
8 . 已知
中,
,
.下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c65bea2c80af038768b74250c694e.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2024高二·全国·专题练习
解题方法
9 . 如图,平面四边形
中,
与
交于点
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b596e35b42cd63d83a861dd9f586b8.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a503772d15eea69d1c8739c6b1c3fc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c2f554699faf6ebf48d65bcfb5dc15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56b596e35b42cd63d83a861dd9f586b8.png)
您最近一年使用:0次
名校
解题方法
10 . 在锐角△ABC中,角A,B,C所对的边分别为a,b,c,已知
,且
.
(1)求证:
;
(2)若
的平分线交AC于D,且
,求线段BD的长度的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ac99c98d7fd621dbb6595d824c28cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098943e98ad321740f83f0bb67004598.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a688b51f4862f610d3064199aeb336.png)
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2024-03-13更新
|
1644次组卷
|
6卷引用:河南省济洛平许2024届高三第三次质量检测数学试题