名校
1 . 已知向量
,
(1)若
,求
的值;
(2)设函数
,求
的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0605fb6f64a4210917f19fa284f61730.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2a24aa2d644b08498821220433f8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bc1401873988ab40dcbf147c89c6bc7.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eda7587451fb7da00dd344e57cf1c347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2019-05-06更新
|
423次组卷
|
2卷引用:2018年湖南省普通高中学业水平考试数学试题
名校
解题方法
2 . 在△ABC中,内角A、B、C所对的边分别是a、b、c,已知
,
.
(1)求
的值;
(2)若
的面积为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e899c486dc49e560fc4aca05e16835b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f03de1c74913e5f3d123257edbfe19.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/721e29b775e696045f44a4b1e7f74ef2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca820a456491348e72587e4fe10bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
3 . 已知
中,内角
所对的边分别为
,其中
, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7302208f124e904963d387fec881a7.png)
(1)若
,求
的值;
(2)若
边上的中线长为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/6fd454e69236d3ece1583420fb552e07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7302208f124e904963d387fec881a7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c181f86de3c96a7ef7a1a04c3a438f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d209864dcb5c839ea7c485a9de05474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2018-08-06更新
|
2742次组卷
|
6卷引用:安徽省合肥市一六八中学2018-2019学年高二上学期入学考试数学试题
4 . 在
中,角
的对边分别为
,
为
的面积,若
.
(1)求
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1283972a369e19bb6d12522ea30b4ed0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc2530fd4fe29189ce74482d1318cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9a475fec8ded321e10a6697319fb975.png)
您最近一年使用:0次
2018-03-03更新
|
1392次组卷
|
6卷引用:广西来宾市2017-2018学年高二上学期期末教学质量调研数学(理)试题