名校
解题方法
1 . 锐角
的内角
的对边分别为
,已知
,
,
(1)求
的值及
的面积;
(2)
的平分线与
交于
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1378530dfec264f4bf99a179826dc957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2914b3a076102aa20c37b8f271e3491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6be785ddfef0d9a1b512d4501ea8601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5383bdca8d8350724180694fb3f3cb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59802bde1dc59ba9000157b08463b2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2021-09-14更新
|
1385次组卷
|
3卷引用:浙江省舟山中学2020-2021学年高三上学期10月月考数学试题
名校
解题方法
2 . 如图,在
中,
,
,
是
内一动点,
,则
的外接圆半径
=______ ,
的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33692fafd3dedaa7e74952fb5e0c765c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b47e792146e2f7d93a9ef9ad1294ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/da291130-d0f4-4ed2-a1bc-2f9890ae1231.png?resizew=160)
您最近一年使用:0次
名校
3 . △
的三个内角
,
,
所对的边分别为
,
,
,且a=1,B=45°,其面积为2,则△
的外接圆的直径为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.![]() | B.![]() | C.4 | D.5 |
您最近一年使用:0次
2021-09-12更新
|
640次组卷
|
5卷引用:浙江省金华市兰溪市第三中学2020-2021学年高一下学期4月阶段考试数学试题
浙江省金华市兰溪市第三中学2020-2021学年高一下学期4月阶段考试数学试题(已下线)6.4.2 正、余弦定理(精练)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)(已下线)6.4.3余弦定理、正弦定理(第3课时)(练案)-2021-2022学年高一数学同步备课 (人教A版2019 必修第二册)黑龙江省哈尔滨师范大学附属中学2022-2023学年高二上学期开学考试数学试题河南省开封市2022-2023年高三上学期开学联考数学试题
20-21高三上·江苏南通·期末
名校
解题方法
4 . 从①
的面积S=
;②
这两个条件中任选一个,补充在下面的问题中进行求解.如图,在平面四边形
中,AB=CD=2,B=
,对角线
平分
,且____________,求线段
的长.
注:如果选择两个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b199d124fb9a5bc8438c9884f04534.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/03902478df1a55bc99703210bccab910.png)
注:如果选择两个条件分别解答,按第一个解答计分.
![](https://img.xkw.com/dksih/QBM/2021/4/21/2704500048740352/2806378467794944/STEM/2735b59cf5fc4f509bda831f1b80d01e.png?resizew=219)
您最近一年使用:0次
2021-09-12更新
|
483次组卷
|
7卷引用:浙江省金华市云富高级中学2020-2021学年高一下学期3月月考数学试题
浙江省金华市云富高级中学2020-2021学年高一下学期3月月考数学试题(已下线)江苏省南通市如皋市2020-2021学年高三上学期期末数学试题(已下线)预测05 解三角形-【临门一脚】2021年高考数学三轮冲刺过关(新高考专用)【学科网名师堂】(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22日)四川省泸州市老窖天府中学2021-2022学年高三上学期10月月考数学试题四川省泸州市天府老窖中学2021-2022学年上学期高三第一次月考文科数学试题苏教版(2019) 必修第二册 过关斩将 第11章 本章达标检测
20-21高一下·浙江·期末
名校
解题方法
5 .
中,角
、
、
的对边分别为
、
、
,
.
(1)若
为锐角三角形,其面积为
,
,求
的值;
(2)若
,求
的值.
![](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/696bf7c8ee1492b2ad2bb74d28ea8d49.png)
(1)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/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e22ed3650f5bd1f435af557814c6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e29b775e696045f44a4b1e7f74ef2.png)
您最近一年使用:0次
2021-09-09更新
|
1380次组卷
|
7卷引用:【新东方】双师301高一下
(已下线)【新东方】双师301高一下浙江省金华市方格外国语学校2020-2021学年高一下学期5月段考数学试题(已下线)考点17 正、余弦定理及解三角形-备战2022年高考数学(理)一轮复习考点帮河南省南阳市第一中学校2021-2022学年高二上学期第一次月考数学试题福建师范大学附属中学2022届高三10月月考数学试题黑龙江省哈尔滨市通河县第一中学2020-2021学年高一下学期期末数学试题辽宁省沈阳市东北育才学校2022届高三上学期联合考试(二模)数学试题
名校
6 . 已知a,b,c分别为
三个内角A、B、C的对边,且
,
(1)求角C;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efd3476dc91ff0180fdab52dd0dc3a66.png)
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668c8ab5abdba7173bcbe573ae87dad4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-09-08更新
|
472次组卷
|
2卷引用:浙江省台州市书生中学2021-2022学年高二上学期起始考数学试题
名校
7 . 南宋数学家秦九韶在
数书九章
中提出“三斜求积木”,即以小斜幂,并大斜幂,减中斜幂,余半之,自乘于上:以小斜幂乘大斜幂,减上,余四约之,为实:一为从隅.开平方得积.现设
中,a,b,c分别为角A,B,C所对的边,S为面积,则“三斜求积木”可用公式
表示.若
,且
,则
面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10a4bbcf2e9404da66210a33f9006bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080cd6e4fac19934612fb5907fc89e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba733538763c8c75385771eda7669b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d500af0ca164f4f04b67a080ba6189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1538130b782a7f159f5873867dc4133e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次
2021-09-08更新
|
293次组卷
|
2卷引用:浙江省台州市书生中学2021-2022学年高二上学期起始考数学试题
解题方法
8 . 锐角
中,内角A,B,
所对的边分别为
,
,
,且
,则角A的大小为___________ ;若
,则
面积S的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/72374b83f36c8728cabc1dc0f61aec9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
9 . 在
中,内角
,
,
的对边分别是
,
,
,若
.
(1)求角
;
(2)若满足
的
恰有一个,求
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/2dd6d3d6c40ad5e0ebb6a348c5541952.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23abe59f777592c19223140a8060e9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 在
中,角
,
,
所对的边分别为
,
,
.若
,
,则
的取值范围为________ .
![](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/59e29b822cda1ba926e96368094fa1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2d770627f29a7c1fa6659ecee13b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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