名校
解题方法
1 . 在
中,角
,
,
的对边分别为
,
,
,则下列结论正确的是( )
![](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)
A.若![]() ![]() |
B.![]() |
C.![]() |
D.三角形三边长分别为![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
2 .
的内角
、
、
的对边分别为
、
、
,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/8904522bf844b61febddc24346f8232f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99ea513ef4c8fc4d8c31eff498740680.png)
您最近一年使用:0次
解题方法
3 . 已知
三个内角
,
,
的对应边分别为
,
,
,且∠
,
,则( )
![](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/0334bc85843337c4dfcfdc5c638f9f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 在
中,
,则
的形状是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8176a512a8e931c56d85607764f48851.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.等腰直角三角形 | B.直角三角形 |
C.钝角三角形 | D.等边三角形 |
您最近一年使用:0次
2022-01-03更新
|
1648次组卷
|
9卷引用:安徽省宣城六校2020-2021学年高一下学期第一次联考数学试题
安徽省宣城六校2020-2021学年高一下学期第一次联考数学试题江苏省淮安市盱眙县马坝高级中学2019-2020学年高一下学期期初调研测试数学试题河南省名校联盟2021-2022学年上学期高三第一次诊断考试文科数学试题河南省南阳市第一中学校2021-2022学年高三上学期第四次月考数学(文)试题(已下线)第01讲 余弦定理-【帮课堂】2021-2022学年高一数学同步精品讲义(苏教版2019必修第二册)广西蒙山县第一中学2021-2022学年高二上学期期末考试理科数学试题(二)(已下线)解密08 正、余弦定理及解三角形(讲义)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(全国通用)(已下线)3.5 正余弦定理(精讲)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)江苏省淮安市淮海中学2022-2023学年高二上学期收心考试数学试题
名校
解题方法
5 . 在
中,角A,B,C的对边分别是a,b,c,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff916a5bb6edb3efef451046718706d5.png)
(1)求
和
的值.
(2)若
,且
的面积
,求边c的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff916a5bb6edb3efef451046718706d5.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb7c8e62fc2a32616ff70ef33c5f4448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f191ba9f8edb26216e9b5b7844d3b434.png)
您最近一年使用:0次
解题方法
6 . 若
,且α是第三象限角,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e77922f491d6551c00c87cef9ae601b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75edde1f4184eac0b2f7846ea18f1eb2.png)
A.1 | B.7 | C.-7 | D.-1 |
您最近一年使用:0次
7 . 已知函数
.
(1)求
的最小正周期和对称轴.
(2)求
的单调区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4254be324ef5707f4b79a40dca9ef30.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2021-08-23更新
|
297次组卷
|
3卷引用:安徽省淮北市树人高级中学2020-2021学年高一下学期期中数学试题
解题方法
8 . 若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0df70b27b3d63010db2594c4b9781a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/236eb41bf50b7c6c051c08071841aebb.png)
您最近一年使用:0次
9 . 如图所示,甲船由
岛出发向北偏东
的方向做匀速直线航行,速度为
海里/小时,在甲船从
岛出发的同时,乙船从
岛正南
海里处的
岛出发,朝北偏东
的方向作匀速直线航行,速度为
海里/小时.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b93217da-8d07-4929-ad62-6782b4cb5a57.png?resizew=155)
(1)求出发后
小时两船相距多少海里?
(2)求两船出发后多长时间距离最近?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369557af210f3281a66cdaac861169ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a70e4a3d1ccb059d593c099d220127be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1137bd3216389e0ebc81f6cef8b947.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/b93217da-8d07-4929-ad62-6782b4cb5a57.png?resizew=155)
(1)求出发后
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(2)求两船出发后多长时间距离最近?
您最近一年使用:0次
2021-08-22更新
|
126次组卷
|
2卷引用:安徽省滁州市定远县育才学校2020-2021学年高一下学期期末数学试题
名校
10 . 已知向量
,
,
(1)若
且
,求x的值;
(2)求
的最大值和最小正周期.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7bdaab3a6c11403c2469ac8d1f51c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a52e4b31ac20509771440eac40eecb.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35e9616e55c8107822a14b0c9be94497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26003cf981097df64f9f55eced7ecf8.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc1525aee9019a25cf71dc6054ec1ce.png)
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