1 .
的三个内角
,
,
对应的三条边长分别是
,
,
,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7803b1550b58f0e92451fdb787a9acb9.png)
(1)求
的值;
(2)若
,
,求
和
的值.
![](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/7803b1550b58f0e92451fdb787a9acb9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfeaf26f178031f78a5545233a2a73f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8724b38453911a791c4eaa449a0d408a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
2016-12-02更新
|
1033次组卷
|
3卷引用:2013届广东省韶关市高三4月第二次调研测试数学理科试卷
2013·河北保定·二模
解题方法
2 . 在
中,
分别为三个内角A、B、C所对的边,设向量![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/bcf93b4692704ba18284f733cd001086.png?resizew=17)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fea3a12224d83d95e79d1964d9f1ad6.png)
![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/46e8eb02a5bd47049fa1605bc50c1b99.png?resizew=15)
,若向量
,则角A 的大小为________________
![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/0c3ed35c2e3c48ac8f326f3463c5f236.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/869781b8ba2d4f3fb9eac419db53e644.png?resizew=40)
![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/bcf93b4692704ba18284f733cd001086.png?resizew=17)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fea3a12224d83d95e79d1964d9f1ad6.png)
![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/46e8eb02a5bd47049fa1605bc50c1b99.png?resizew=15)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ec08f5316557ab073d7a6bc550a1270.png)
![](https://img.xkw.com/dksih/QBM/2013/4/28/1571200295804928/1571200301219840/STEM/38632bfc1f4f407595f76b0ed834dc0f.png?resizew=45)
您最近一年使用:0次
2013·江西南昌·二模
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe2e7217c82ca513c047408c5464e3d.png)
在区间
上单调递增,在区间
上单调递减;如图,四边形
中,
,
,
为
的内角
的对边,
且满足
.
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/73cb83bc9324426c9b852b34f6c04277.png)
(Ⅰ)证明:
;
(Ⅱ)若
,设
,
,
,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe2e7217c82ca513c047408c5464e3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d90f9a49f0d770a94094bb8bde0c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8cd2fab7bebdb0b665c28c474d4712b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79503e015cff70fe47297858eb69dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.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/5f2333da32638ec636fa1e69e750ca4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f01515561e687dd66feb3baa5d14c0.png)
且满足
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/4765853f592c4b7fa48272d7fa39fcb4.png)
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/73cb83bc9324426c9b852b34f6c04277.png)
(Ⅰ)证明:
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/b9290addf88648048b29878e286914a3.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/e8b133a847ec473f9af98d74adcd7d13.png)
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/d0d5229b33184f0ebe7448107b5d1bc2.png)
![](https://img.xkw.com/dksih/QBM/2013/4/20/1571190158344192/1571190163800064/STEM/71ca6cea039b4bcb90a1ebba88d680cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5811e450dcff0e190c3d7378c08797c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
您最近一年使用:0次
2011·广东深圳·一模
名校
4 . 在
中,已知
分别为
,
,
所对的边,
为
的面积.若向量
满足
,则
=________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.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/eb1096b4cfd40c8ef872b1fba9a91c2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb83fac351156d4447cdca7cbd07c194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2016-12-02更新
|
1273次组卷
|
8卷引用:2011届深圳市高三第一次调研考试数学理卷
(已下线)2011届深圳市高三第一次调研考试数学理卷(已下线)2014届广东省广州市海珠区高三上学期综合测试二理科数学试卷2016年上海市上海师大附中高三模拟数学试题陕西省西安市长安区第一中学2016-2017学年高二下学期期中考试数学(文)试题(已下线)必刷卷09-2020年高考数学必刷试卷(新高考)【学科网名师堂】-《2020年新高考政策解读与配套资源》2020届安徽省六安市第一中学高三下学期3月月考数学(文)试题(已下线)2020届高三3月第01期(考点05)(文科)-《新题速递·数学》(已下线)卷09-2020年高考数学冲刺逆袭必备卷(山东、海南专用)【学科网名师堂】
2010·广东·一模
名校
5 . 已知在
中,
所对的边分别为
,若
且
.
(Ⅰ)求角A、B、C的大小;
(Ⅱ)设函数
,求函数
的单调递增区间,并指出它相邻两对称轴间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9784469aa0fdc63dc07b8f3d51a0802f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00f6b8f025bc94ba24c5e3d3e5284b8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a0e575b84d84cadae1456cd6639920.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20be51d05f24d05eb90908d90e8bd89e.png)
(Ⅰ)求角A、B、C的大小;
(Ⅱ)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c7e35eb6f6bafb92193633b81518a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
您最近一年使用:0次
2016-12-02更新
|
1354次组卷
|
6卷引用:2010年广东省高考冲刺强化训练试卷十三文科数学
(已下线)2010年广东省高考冲刺强化训练试卷十三文科数学(已下线)2013届新疆乌鲁木齐市第八中学高三第一次月考数学试卷上海市南洋模范中学2017-2018学年高三上学期期末数学试题上海市南模中学2017-2018学年高三上学期开学考数学试题上海市南模中学2017届高三上学期9月初态考试数学试题上海市南洋模范中学2024届高三上学期开学考试数学试题
2012·广东汕头·一模
6 . 已知函数
(
)的部分图像,
是这部分图象与
轴的交点(按图所示),函数图象上的点
满足:
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/33893364-a879-46a1-998b-5dd5e19411a5.png?resizew=188)
(Ⅰ)求函数
的最小正周期;
(Ⅱ)若
的横坐标为1,试求函数
的解析式,并求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5e2a383cb47eb87493e86c8c40caf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/681b5dd15828303d08aad2bbfc16ffff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe5281e38ed4162c341681e2182f5a09.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/15/33893364-a879-46a1-998b-5dd5e19411a5.png?resizew=188)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a783b1e8eea93e4ce94024b9964f8817.png)
您最近一年使用:0次
2012·湖南长沙·一模
名校
解题方法
7 . 已知函数
.
(
)若
,求
的值.
(
)在
中,角
,
,
的对边分别是
,
,
,且满足
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8b8e34049a5a88b1e303928b29b8cc.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907e4ba6d5f2eea68442def1911957fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98437aadd0308a792e7ca57eec1992f8.png)
(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/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/b8b1182c4fbfbe44f693a823c70ad415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9de0f6d2b676fb885e43df4db0ed66d9.png)
您最近一年使用:0次
2016-12-01更新
|
1559次组卷
|
6卷引用:【全国百强校】广东省广州市实验中学、执信中学2018届高三10月联考数学(理)试题
【全国百强校】广东省广州市实验中学、执信中学2018届高三10月联考数学(理)试题(已下线)2012届湖南省浏阳一中高三四月模拟考试理科数学试卷(已下线)2015届福建省三明市一中高三上学期半期考试理科数学试卷四川省成都市第七中学2018-2019学年高一下学期期中数学试题四川省宜宾市第四中学校2019-2020学年高一下学期第二次月考数学试题四川省宜宾市叙州区第一中学校2019-2020学年高一下学期期中考试数学试题
2012·广东云浮·一模
8 . 在
中,角
的对边分别为
,
是该三角形的面积,
(1)若
,
,
,求角
的度数;
(2)若
,
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.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)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb533916fb9b302888f1667f7dc782da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9979656ca6b2489607845c662c3cc34f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c7eff7595cfe0fec66a4407ddc8e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e15cbd7c42d7b15d7ba8d2b28ab8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa3b4871fcdbff66cbb78e4b90dd7a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8991405dee840a652bc32f621ba50f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
11-12高三·山西·阶段练习
解题方法
9 . 如图,在四边形ABCD 中, ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41d218b343bef4f97b2cc00988f2646.png)
(1)求边BC的长;
(2)求四边形ABCD的面积;
(3)求sinD的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c41d218b343bef4f97b2cc00988f2646.png)
(1)求边BC的长;
(2)求四边形ABCD的面积;
(3)求sinD的值.
![](https://img.xkw.com/dksih/QBM/2012/2/17/1570748722421760/1570748727926784/STEM/b81f58e1d52946b7a6014cd5b6d3b0b2.png?resizew=220)
您最近一年使用:0次
2012·广东汕头·一模
解题方法
10 . 已知函数
.
(1)求函数
的最小值和最小正周期;
(2)已知
内角
的对边分别为
,且
,若向量
与
共线,求a、b的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f283e5e52d205355cdbb35f6fbca26f9.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd40d480b4b0a70f4e0dc10f601beff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9881e39c19e32bcf3168e0b59702ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/660af46608cd6d4ff3321dfea744f9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2790bd5be2fb28ba8eaa34e1f53beec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5863f11860c750618001e241afc6887.png)
您最近一年使用:0次