名校
解题方法
1 . 在
中,角A,B,C所对的边分别a,b,c,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9823c331bef0ffc8ea64e55b12863c6.png)
(1)求角A的值;
(2)若
,BC边上的中线长为1,
为角A的角平分线,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9823c331bef0ffc8ea64e55b12863c6.png)
(1)求角A的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80987f45680998680357b8486e8ed52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2023-10-29更新
|
1212次组卷
|
4卷引用:黄金卷02
(已下线)黄金卷02山东省济南市莱芜第一中学2023-2024学年高三上学期10月月考数学试题山东省临沂第一中学2023-2024学年高三上学期周末强基训练数学试题(已下线)专题12 正余弦定理妙解三角形问题和最值问题(练习)
名校
2 . 已知
中,
.
(1)求
;
(2)求
;
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4cf92c0b58f63c2132c798e08d51ed.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7a71b30063e929dfcb71ae1693149e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-10-25更新
|
482次组卷
|
9卷引用:天津外国语大学附属河北外国语中学2023-2024学年高一下学期第一次月考数学试题
天津外国语大学附属河北外国语中学2023-2024学年高一下学期第一次月考数学试题北京市延庆区2022-2023学年高一下学期期末数学试题内蒙古科左中旗民族职专实验高中普高2023-2024学年高三第一次月考数学(文)试题北京市延庆区第五中学2023-2024学年高二上学期10月阶段测试数学试题广东省深圳市福田区外国语高级中学2023-2024学年高二上学期期中数学试题新疆维吾尔自治区巴音郭楞州博湖县奇石中学2024届高三上学期期中数学试题(已下线)专题04 正余弦定理4种常考题型归类-《期末真题分类汇编》(北京专用)(已下线)专题06正余弦定理期末9种常考题型归类-《期末真题分类汇编》(人教B版2019必修第四册)【北京专用】专题09解三角形(第二部分)-高一下学期名校期末好题汇编
解题方法
3 . 在
中,角
所对的边分别为
,
.
(1)求
的值;
(2)若
,求
的面积;
(3)求
的值.
![](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/8d7101568c68e928d0280c726cc648f2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcfa3e340b3976832d450dd4ae7e7a7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f34365e5040ce6944115c8da61bf110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/959e1458bcfc3c1324fe93a797a27430.png)
您最近一年使用:0次
名校
解题方法
4 . 在
中,角A、B、C的对边分别为a,b,c,已知
且
.
(1)求
的值;
(2)若
,①求
的值;②求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea43cdd29ad1e9d4658072c68097aa74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c94574744f18fefe561cc784075f51.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39900a2d790732077ffb571427a134fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f3a180c35808d1fe14ae17876c4cc0.png)
您最近一年使用:0次
5 . 在
中,
.
(1)求
;
(2)再从条件①,条件②,条件③,条件④这四个条件中选择一个作为已知,使
存在且唯一确定,若D是
边上的中点,求
的面积.
条件①:
,
;
条件②:
,
;
条件③:
,
;
条件④:
,
.
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1af751934461a7046db4e5ab355040.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)再从条件①,条件②,条件③,条件④这四个条件中选择一个作为已知,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f517953a21c2a45fd8465072c44bfc.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcaabbc3dfc41a697d94ce30a5525d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/952eb5a219e0d6eb4b039092da70b865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
条件③:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7806bf3865558f820a9bace47198fc41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
条件④:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f425a37c8ec6a3c686cfb21c79064d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
您最近一年使用:0次
2023-10-17更新
|
588次组卷
|
3卷引用:天津市北辰区南仓中学2023-2024学年高一下学期3月教学质量过程性监测与诊断数学试题
解题方法
6 . 如图在正方形
中,
为
中点,设
.
(1)求
;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6293a2528570eda7fef7c784efc7d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a3c616a942318302c75de0c1cb912bf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/2/986dafc8-9acb-4280-953e-72c13b92af3a.png?resizew=161)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6af1a331a68b888bef4469700f08adba.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fae886539d52bddc6f7b45332d4018c.png)
您最近一年使用:0次
解题方法
7 . 在
中,内角
所对的边分别为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfad32e4fb176dde42cd9d92efeab4ae.png)
(1)求
的大小;
(2)若
,求
的值.
![](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/bfad32e4fb176dde42cd9d92efeab4ae.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb89ae4455272b3b5f15cf37dc241f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f22fd382ec53fc639f32eac8ff96529.png)
您最近一年使用:0次
名校
8 . 已知向量
,
,
,设函数
.
(1)求函数
的单调递增区间;
(2)设
,
,
分别为
的内角
,
,
的对边,若
,
,
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4087d0dbd10892eb7bf75ead9b40b28b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c33e03552a0027914ac8acf6aa2d578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec5e9839a81f2e756753b2dabd77a298.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](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/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/eddbd96d2bf726d74b2a21b7e6a849df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4aa8f68a1bc7f5224f13eceb75a98c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-10-14更新
|
649次组卷
|
2卷引用:天津市静海区第一中学2023-2024学年高三上学期10月月考数学试题
名校
解题方法
9 . 已知
的内角A,B,C的对边分别为a,b,c,已知
,
.
(1)求
的值;
(2)若
,
(i)求
的值;
(ⅱ)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9259a7352f4a46c88813e9b04b2c5e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94a67c529d3e81a79c4e4409953d316f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a034ac7d59436cebc4759fd850dfb5.png)
(i)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1ee8a44ed131621af5c6fbb860787c.png)
您最近一年使用:0次
2023-10-14更新
|
686次组卷
|
2卷引用:天津市静海区第一中学2023-2024学年高三上学期10月月考数学试题
名校
解题方法
10 . 在
中,角
的对边分别为
,已知
.
(1)求
的值;
(2)若
,且
,求边长
及
的面积.
(3)若
,求
的值.
![](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/bd9d79f04f3479a6b14adfd1c6024ff3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32f2d4d1d2c16c54b2caef17840bfcb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43c7630484d76b37662fe1c4ebdf2f9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098943e98ad321740f83f0bb67004598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33848d269c66ce7979ab6a2666f0bdbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76ea17a5419f620ccb0bbb2db1779b3a.png)
您最近一年使用:0次