名校
解题方法
1 .
的内角
、
、
所对的边分别为
、
、
,已知
.
(1)求角
;
(2)若
,求
面积的取值范围.
![](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/366256d86a3f363f10543ae66ae99c5b.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-08-12更新
|
110次组卷
|
9卷引用:【市级联考】云南省昆明市2019届高三复习教学质量检测理科数学试题
【市级联考】云南省昆明市2019届高三复习教学质量检测理科数学试题2019届重庆市南开中学高三下学期月考数学理科试题湖南省益阳市2019-2020学年高三下学期复学摸底考试理科数学试题安徽省滁州市定远县育才学校2020届高三下学期6月模拟数学(理)试题(已下线)专题17 解三角形-2020年高考数学(理)母题题源解密(全国Ⅱ专版)(已下线)专题17 解三角形-2020年高考数学(文)母题题源解密(全国Ⅱ专版)四川省雅安市天立高级中学2023届高三上学期9月月考数学(文)试题四川省雅安市天立高级中学2023届高三上学期9月月考数学(理)试题安徽省池州市第一中学2019-2020学年高一下学期期中数学(理)试题
名校
解题方法
2 . 在
中,内角A,B,C所对的边分别是a,b,c, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5a716c7861aa992448befdb6bb30a6.png)
(1)求A
(2)若
,求
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d5a716c7861aa992448befdb6bb30a6.png)
(1)求A
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
您最近一年使用:0次
名校
解题方法
3 .
的内角
,
,
的对边分别为
,
,
,已知
.
(1)证明:
是等腰三角形;
(2)若
,且
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/9e8a081d84cc8df495dc5db5621755ae.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5932015668fef017978ac08bb9c47da9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d8649ee1e2a37c2a22216539c8fb667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2020-03-19更新
|
520次组卷
|
3卷引用:云南省玉溪市第一中学2023届高三上学期开学考试数学试题
云南省玉溪市第一中学2023届高三上学期开学考试数学试题 2020届河南省焦作市高三年级第一次模拟数学理科试题(已下线)专题1.1+正弦定理(1)(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)
名校
4 . 已知
的面积为
,
,
在边
上,
,内角
,
,
的对边分别为
,
,
,当
最大时,求
,
,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d0ab00d82a42d7c50b6358d0a992c.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/56f2bbbf665a9e085105f0ab1adcef1e.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/03902478df1a55bc99703210bccab910.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)
您最近一年使用:0次
2019-12-27更新
|
274次组卷
|
2卷引用:云南省云南师范大学附属中学2019-2020学年高三第三次适数学(理)试题
名校
5 . 已知
的内角
的对边分别为
.
(1)若
,求
;
(2)若
,求
的周长的范围.
![](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)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ed3c6e14c8ec54f63f46211f242dd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45235238b25a580dd95c3631254fe065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2019-12-03更新
|
737次组卷
|
5卷引用:云南省大理白族自治州2019-2020学年高三上学期11月月考数学(文)试题
6 . △ABC的内角A,B,C的对边分别为a,b,c,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc329f17fac9666a35ddac1ac5bd2d69.png)
(1)求
;
(2)若
,求△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc329f17fac9666a35ddac1ac5bd2d69.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28fe84c03333fb3bd029391dd1697ce2.png)
您最近一年使用:0次
名校
7 . 已知函数
.
(1)求
的最小正周期,并求其单调递减区间;
(2)
的内角
,
,
所对的边分别为
,
,
,若
,且
为钝角,
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939405a5e194a87abb050ccf16e28e91.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(2)
![](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/506ee56f4bbb9d05ef6e14ecf0dfc31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2019-09-19更新
|
2787次组卷
|
7卷引用:云南民族大学附属中学2020届高三第一次高考仿真模拟数学(文)试题
名校
8 . 在
中,
,点D在边
上,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/0cb7e308-2b2f-44cc-b95c-bdf1f5e9149a.png?resizew=159)
(1)若
的面积为
,求
;
(2)设
,若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb08f6a798dc293f3d8de281190f65e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236c134aad7d9a21c49c07e924b9a531.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/0cb7e308-2b2f-44cc-b95c-bdf1f5e9149a.png?resizew=159)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6d51738ac1bc8b9530ea4a55745c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198670c39254aeab92aa4f1bdc58a14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2020-03-18更新
|
821次组卷
|
8卷引用:云南省开远市第一中学校2023届高三下学期6月月考数学试题
名校
9 . 如图,在
中,
,
,点D在线段BC上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/8228dbde-f5d2-49b4-be71-9376f1946771.png?resizew=138)
(1)当
时,求
的值;
(2)若AD是
的平分线,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846071242f981289741ad19f4e7190cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8819cc94366a9931d38af58ac6d7e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/8228dbde-f5d2-49b4-be71-9376f1946771.png?resizew=138)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a1d4c140243ba9a9bd7256ec2bbce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d8c176e0c2b435675a3b8efab0e498d.png)
(2)若AD是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fc9f894312e55c87a0d6737080e233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ac5396c5ea442e0364b50c1db3d2da.png)
您最近一年使用:0次
2019-07-15更新
|
1223次组卷
|
4卷引用:云南省长水教育集团2024届高三上学期10月质量检测数学试题
名校
10 . 如图,在平面四边形中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/4199a64b-13fb-4940-bbdd-2458b809176b.png?resizew=159)
(1)求对角线
的长;
(2)若四边形
是圆的内接四边形,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4b1fdfa6c28c7b4113ba306547aa4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfeaf26f178031f78a5545233a2a73f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531f702409d7274451e1948a5a4cf157.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/4199a64b-13fb-4940-bbdd-2458b809176b.png?resizew=159)
(1)求对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6d51738ac1bc8b9530ea4a55745c2.png)
您最近一年使用:0次
2019-05-19更新
|
1235次组卷
|
6卷引用:【全国百强校】云南省师范大学附属中学2019届高三第八次月考数学(理)试题
【全国百强校】云南省师范大学附属中学2019届高三第八次月考数学(理)试题【全国百强校】云南省师范大学附属中学2019届高三第八次月考数学(文)试题贵州省贵阳市乌当区2023届高三上学期期中质量监测数学(理)试题人教B版(2019) 必修第四册 逆袭之路 第九章 9.1.2 余弦定理(1)(已下线)1.1.2余弦定理(1) -2020-2021学年高二 数学课时同步练(人教A版必修5)(已下线)【新教材精创】9.1.2余弦定理及其应用练习(2)