在△ABC中,角
的对边分别为
,若
,且
.
(2)若
,且
的面积为
,求BC边上的中线AM的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083f0ec5e618f2f7aea3d8ab94460f4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/943184faad1b7c1b16c29727b2db507f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030b81c1ae99d9668ce18de8a66ef4ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
22-23高三下·重庆·期末 查看更多[8]
更新时间:2023-03-25 16:35:31
|
相似题推荐
【推荐1】
的三个内角A,B,C的对边分别为a,b,c.①
;②
;③
.
(1)在上述三个条件中任选一个,求B;
(2)在(1)所选定的条件下,若
为锐角三角形,且
,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af30a92eda72d7b4daf2dc17c0c078af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/677bb8c5185c9ea79ae07306bdf8f0c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1211282a5706757899f3bca486affaa3.png)
(1)在上述三个条件中任选一个,求B;
(2)在(1)所选定的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.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2】
的内角
的对边分别为
,已知
,
,
(1)求
;
(2)若
,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/124a2af5ba9bc18507ddf37c0a08fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ae36029429324563cd707fcef0bdd2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23725094c363fd158166a8698971694c.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1】已知
的面积为
,且
.
(1)求
的值;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09a32809c6c268485b6316caea4df7a4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a24a8f5e8fb89381f8add6549170345.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d62e60396295cd74d03e38978405bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.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,
,
内有一点
,且
,
.
(1)若
,求
的面积;
(2)若
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5984db6bd57481b610fb7a47a41c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4f29779edb82350349f2c4883180f0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f44353303fd211d5bd4b8e0b45e3d3.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9b988ebe394ef30597225b2bb58ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6133decf8382f19fcccce11b1e74b238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.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】请从下面三个条件中任选一个,补充在下面的横线上,并解答.
①
;
②
;
③
.
在△ABC中,内角A,B,C的对边分别是a,b,c,若 .
(1)求角C;
(2)若
,求△ABC周长的取值范围.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824d85f9ed21183d0f09e910f965c7d3.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f81fbb7995a6fe56d25c3a98658fe19.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615e4c77cde1ed48e4da810395aebda5.png)
在△ABC中,内角A,B,C的对边分别是a,b,c,若 .
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知在△ABC中,内角A,B,C对边的边长分别是a,b,c,且c=2,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
(1)若△ABC的面积等于3,求a,b;
(2)若sin(A+C)=2sinA,求△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
(1)若△ABC的面积等于3,求a,b;
(2)若sin(A+C)=2sinA,求△ABC的面积.
您最近一年使用:0次