名校
解题方法
1 . 在锐角
中,
.
(1)若
的面积等于
,求
;
(2)求
的面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a10b376456f091d40eeb62566c3be0bc.png)
(1)若
![](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/632244ea6931507f8656e1cc3437d392.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2017-10-26更新
|
929次组卷
|
3卷引用:山西大学附属中学2018-2019学年高一下学期5月月考数学试题
名校
2 . 在
中,角
的对边分别为
,且
,
.
(1)求角
的大小;
(2)若
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa7978a5e50789f1548ba673e300459.png)
(1)求角
![](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/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0577566dbcc526fb6f783491a4784902.png)
您最近一年使用:0次
名校
3 . 如图,在四边形
中,
,
平分
,
,
,
的面积为
,
为锐角.
![](https://img.xkw.com/dksih/QBM/2017/10/16/1796568168177664/1798722393300992/STEM/223725ce8fa1413c8113df6cc22f48ce.png?resizew=192)
(Ⅰ)求
;
(Ⅱ)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650c6c818df102a83ce5159e3208d01a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffc2817fa590affb5a760a25dc65308.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7041ab5a0a37829da596022c0f59ac11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df6d51738ac1bc8b9530ea4a55745c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c78d6b9d2b8714ba8b5c206f376ba56f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://img.xkw.com/dksih/QBM/2017/10/16/1796568168177664/1798722393300992/STEM/223725ce8fa1413c8113df6cc22f48ce.png?resizew=192)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
您最近一年使用:0次
2017-10-19更新
|
1439次组卷
|
6卷引用:山西大学附属中学2018-2019学年高一下学期5月月考数学试题
山西大学附属中学2018-2019学年高一下学期5月月考数学试题福建省德化一中、永安一中、漳平一中2018届高三上学期三校联考数学(文)试题1福建省德化一中、永安一中、漳平一中2018届高三上学期三校联考数学(文)试题2【市级联考】河南省洛阳市2019届高三上学期尖子生第二次联考数学文科试题(已下线)专题07 三角形中的组合图形问题(第一篇)-备战2020年高考数学大题精做之解答题题型全覆盖(已下线)艺体生一轮复习 第四章 三角函数与解三角形 第22讲 解三角形【讲】
名校
4 . 已知
为
的三内角,且其对边分别为
、
、
,
.
(1)求sinC的值. (2)若a=7,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e3cf9e8def209bd2e664eb949f5ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e2da608b66c9aee03e2503388ba4fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/376ff64444e53072f8892edeeef5eeac.png)
(1)求sinC的值. (2)若a=7,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
5 . 已知在
中,
分别是角
的对边,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/298ce772868ca3b6f9260959c524a486.png)
(1)求角
;
(2)当边长
取得最小值时,求
的面积;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/298ce772868ca3b6f9260959c524a486.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)当边长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
6 .
的内角
所对的边分别是
,已知
.
(1)求
;
(2)若
的面积为
,
,
,求
,
.
![](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/1fba9a94dbc043ae1fa16e30ad817b16.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/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8653af649d2a1b22f50c8529ef43136d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069390dd908ff203327958117a226593.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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2017-09-23更新
|
1126次组卷
|
6卷引用:山西省2017—2018届年度高三名校模拟考试第一次五校联考 数学(理)试题
名校
7 . 在
中,三个内角A,B,C的对边分别为a,b,c,若
,且
,
,则
面积为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6867eb7d63ae0ac128897b926e3c1166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d954b315b29a8afafa1fc920c5c09f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a4e2e47a10bd0e154b638bf8198601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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2017-09-15更新
|
1163次组卷
|
7卷引用:山西省大同市2019-2020学年高三上学期第一次联合考试数学(文)试题
山西省大同市2019-2020学年高三上学期第一次联合考试数学(文)试题吉林省长春市普通高中2018届高三一模考试卷(文科)数学试题吉林省长春市普通高中2018届高三质量监测(一) 数学(文科)试题【全国百强校】河南省南阳市第一中学2018届高三第十九次考试数学(文)试题(已下线)2019年一轮复习讲练测【新课标版理】4.6 正弦定理和余弦定理【测】(已下线)2019年一轮复习讲练测【新课标版文】4.6 正弦定理和余弦定理【测】【市级联考】河南省濮阳市2019届高三下学期摸底考试数学(理)试题
名校
解题方法
8 . 在
中,
分别是角
的对边,且
,
(1)求
的大小;
(2)若
,当
取最小值时,求
的面积;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29489effc7710a7d248ddb259d40a0c2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b117c0e2c7a70c00ad56675598f77f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2017-08-17更新
|
253次组卷
|
2卷引用:山西省怀仁县第一中学(两校区)2016-2017学年高一下学期期末考试理数试题
解题方法
9 . 在
中,
分别为
的对边,若
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febfce52f76b851da3c3dda7ef205a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a74c3e9a8f3f11e98b4fa659a97679.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a12562e286e953b3f2de429fa99b501c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
您最近一年使用:0次
解题方法
10 . 在
中,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f90788576c70c6123d9058fa0c4fa4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
您最近一年使用:0次