已知
中,角A,B,C所对的边分别为a,b,c,
,且
.
(1)求
外接圆的半径;
(2)若
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a81eedf404aeb0a2310a310910f73d83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d396a1062e2bb46d7ab45a8cd6256196.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
20-21高三上·广东深圳·阶段练习 查看更多[4]
2020届广东省深圳市高三上学期第二次教学质量检测数学(理)试题2020届江西名校学术联盟高三教学质量检测考试(二)数学(文)试卷2020届江西名校学术联盟高三教学质量检测考试(二)数学(理)试卷(已下线)专题05 三角形中的边角、面积计算问题(第一篇)-备战2020年高考数学大题精做之解答题题型全覆盖
更新时间:2020-02-01 21:13:55
|
相似题推荐
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】
的内角
的对边分别为
,设
.
(1)求
;
(2)若
依次成等差数列,且
的外接圆的面积为
,求
的面积.
![](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/9381773da4c7f14ad330c33b0e1b93bc.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12931401ad36f7dba4738857d37bcad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d312cb8b123df293b49a9e7f9417a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在
中,内角
的对边分别为
,且
与
共线.
(1)若
,则此时
是否存在?若存在,求
的面积;若不存在,请说明理由;
(2)若
的外接圆半径为4,且
,求
的面积.
![](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/ac07bdc3c934ed6dcf479edfa41b214a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e339ad8016779e91ab239b14818c17d7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4620c68d4d11534c171bda3e347b4c9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc852ae7f54d81347afa8233b78d6bd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】已知
中角
、
、
所对的边分别为
、
、
,且满足
,
.
(1)求角A;
(2)若
,
边上中线
,求
的面积.
![](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/ee4f8a1e1fc0206ecbb50dca1be060a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82b212ffece98b7918f74d67de4e4c5.png)
(1)求角A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7650cede07c4758a9b3bb1da4553acc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】已知在
中,角
的对边分别为
,且
.
(1)求
的值;
(2)若
,求周长的取值范围.
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/156720edc323e00e583e459ccc77656f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e9338495a7d0d08f15108dfd5bc548.png)
您最近一年使用:0次
【推荐1】在
中,
,从下面四个条件中选择一个作为已知,使三角形存在且唯一.
①
;②
;③
;④
.
(1)求
的值
(2)求
的面积
注:如果选择的条件不符合要求,得0分;如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d232ca71c525629632219daa9850defe.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b104867a12d24a353d94858c2fa17c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18af922d7bcd7a1bfbd89398d86eda5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a29b114b83dbb525d7012e114676aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcfa3e340b3976832d450dd4ae7e7a7.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
注:如果选择的条件不符合要求,得0分;如果选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
【推荐2】在①
,②
,③
三个条件中任选一个补充在下面的横线上,并加以解答.
在
中,角A,B,C的对边分别为a,b,c且__________,作AB⊥AD,使得四边形ABCD满足
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/dc8d07d5-f454-4f40-b8ec-4290a0497217.png?resizew=179)
(1)求角B的值;
(2)求BC的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204518fa66e426d2dff79415a5a61433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213f068f2be41e3013e82664d5c47f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79510f60d183b9d16390b703964d4312.png)
在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a06aa91c5d3dc4e9791d4723aa2a345.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/18/dc8d07d5-f454-4f40-b8ec-4290a0497217.png?resizew=179)
(1)求角B的值;
(2)求BC的取值范围.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐1】在△ABC中,角A,B,C的对边分别为a,b,c,已知
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/5/14/2979257997246464/2979394794127360/STEM/dcb7a4f3-63e4-459f-8889-420e5ad27433.png?resizew=136)
(1)求
的值;
(2)在边BC上取一点D,使得
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://img.xkw.com/dksih/QBM/2022/5/14/2979257997246464/2979394794127360/STEM/dcb7a4f3-63e4-459f-8889-420e5ad27433.png?resizew=136)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
(2)在边BC上取一点D,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5656661f1d7fd5b403d1dd39d1adfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168bcd54c4f609a9562c2d7b4715aa4b.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】在“①
;②
;③
”这三个条件中任选一个补充在下面的横线上,并加以解答.
在
中,角
所对的边分别为
,且______.
(1)求角
的大小;
(2)若
表示
内切圆的半径,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835ce66de2ae52b8881fccc4d9500b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60f3d8e528f2b3e55d2d45fdc9c3121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8c513d286dd87aede05a85b9346e38.png)
在
![](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)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cccd23120224aab939254c8b91da30e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
您最近一年使用:0次