1 . 设
的内角A,B,C的对边长a,b,c成等比数列,
,延长
至D使
.
(1)求
的大小;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eaa26f34eb2ec5488cef6bd5263d9df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f685431e82a93da29b46e72dedbf2eeb.png)
您最近一年使用:0次
2 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5a0ef6b1698c4781146742aeef5aeb.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e253fac56345b17eb0ca906c2c22d7c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d5d04aa1693c3b0bf215f769c718c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e888ea14da893971e13858945bf0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d5a0ef6b1698c4781146742aeef5aeb.png)
您最近一年使用:0次
解题方法
3 . 设
的内角
、
、
所对边的长分别是
、
、
,且
,
,
.
(Ⅰ)求
的值;
(Ⅱ)求
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/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8904522bf844b61febddc24346f8232f.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e5499634a7e80a92139d0bc69037373.png)
您最近一年使用:0次
2020-05-27更新
|
632次组卷
|
3卷引用:2020届天津市红桥区高考一模数学试题
2020届天津市红桥区高考一模数学试题(已下线)专题16 解三角形(解答题)—2020年高考数学母题题源解密(天津专版)安徽省滁州市定远县育才学校2021-2022学年高三5月教学质量检测数学(理)试题
4 . 已知函数
,
.
(1)求函数
的最大值,并写出相应的
的取值集合;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9957492ee7746115783ccada9c65b846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee404c894d597fc5a94d08596c55f521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa1db2d4ffea4a6de0325d7d498e3afb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
您最近一年使用:0次
2020-05-09更新
|
1796次组卷
|
9卷引用:2020届江苏省泰州市高三下学期调研测试数学试题
2020届江苏省泰州市高三下学期调研测试数学试题江苏省泰州市2020届高三下学期5月高考模拟数学试题(已下线)期末测试卷(二)-2020-2021学年高一数学必修第一册单元提优卷(人教A版(2019))(已下线)【新东方】杭州新东方高中数学试卷317(已下线)【新东方】杭州新东方高中数学试卷315江西省赣州市十五县(市)十六校2021届高三上学期期中联考数学(理)试题浙江省杭州高级中学钱江学校2020-2021学年高二上学期期中数学试题福建省泉州市永春第二中学2020-2021学年高二下学期期末数学试题江苏省徐州市邳州市宿羊山高级中学2020-2021学年高一下学期第一次学情检测数学试题
5 . 如图,在
中,
,
,
,
,D在
边上,连接
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/f15003ef-8601-4200-b1b4-cc119b8023fa.png?resizew=182)
(1)求角B的大小;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf47af147e0663996133532ce0f1c33c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4775c549f9891ceee1895c603f134c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c1e75eb744576c32eed3f9d20f9558.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4494a85de0be0b97a69348115aef8513.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/13/f15003ef-8601-4200-b1b4-cc119b8023fa.png?resizew=182)
(1)求角B的大小;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
您最近一年使用:0次
2020-02-01更新
|
2014次组卷
|
8卷引用:2020年陕西省高三教学质量检测卷(一)数学理科试题
2020年陕西省高三教学质量检测卷(一)数学理科试题(已下线)2020届超级全能生高考全国卷24省1月联考甲卷数学(理科)试题(已下线)专题06 三角函数及解三角形-2020年高三数学(理)3-4月模拟试题汇编(已下线)专题07 三角形中的组合图形问题(第一篇)-备战2020年高考数学大题精做之解答题题型全覆盖辽宁省锦州市凌海市第三高级中学2019-2020学年高一6月月考数学试题(已下线)专题1.1+正弦定理(2)(重点练)-2020-2021学年高二数学十分钟同步课堂专练(苏教版必修5)(已下线)8.2.2 两角和与差的正弦,正切-2020-2021学年高一数学课时同步练(人教B版2019必修第三册)(已下线)【新东方】双师174高一下
6 . 已知
,函数
.
(1)若
,求
的单调递增区间;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93778ac16acb542c259b9c4c49b410b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c56bcb9b132f506c004e3aca22a631b0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d437140d9efb7165512a2c798dabffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6823118de8f12e0809efe8348b955009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04eb2d56139023560725902bb4be978.png)
您最近一年使用:0次
名校
7 . 在
中,
,
,
.
(Ⅰ)求a的值;
(Ⅱ)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42190fdb24c6e918e06eb4a2ebf8856f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b326dc38d92806c8911b9f9e1a3f323e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc877320766f2da22323b18888bc8cf.png)
(Ⅰ)求a的值;
(Ⅱ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbb5a9c67bbafe405f3149596baf960c.png)
您最近一年使用:0次
2019-10-22更新
|
4595次组卷
|
11卷引用:【区级联考】天津市部分区2019届高三联考一模数学(文)试题
【区级联考】天津市部分区2019届高三联考一模数学(文)试题吉林省长春市实验中学2022-2023学年高三上学期二模考试数学试题北京市朝阳区2019~2020学年高三上学期抽样检测数学试题2019届天津市部分区高三下学期质量调查(一)数学(文)试题2020届甘肃省金昌市永昌县第四中学高三上学期期末数学(理)试题(已下线)第一章+解三角形(基础过关)-2020-2021学年高二数学单元测试定心卷(人教版必修5)(已下线)专题1.1+正弦定理(2)(基础练)-2020-2021学年高二数学十分钟同步课堂专练(苏教版必修5)福建省福州市格致中学2020-2021学年高一3月第一次月考数学试题(已下线)第11章 解三角形(提高卷)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)(已下线)6.1 正弦定理和余弦定理(已下线)模块八 三角函数与解三角形-1
名校
8 . 已知函数.
(Ⅰ)求的值;
(Ⅱ)若,且
,求
的值.
您最近一年使用:0次
2019-07-01更新
|
838次组卷
|
3卷引用:河南省焦作市博爱县第一中学2024届高三下学期第二次模拟考试数学试题
名校
9 . 在
中,角
,
,
的对边分别为
,
,
,已知
.
(Ⅰ)求角
的大小;
(Ⅱ)设
,
,求
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/e4e41e7cd5514d3ac0e7adc537882317.png)
(Ⅰ)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f5b763032c085a1e60822d8dc1b3605.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fc90eb7e72622d0665504a09286fa26.png)
您最近一年使用:0次
10 . 已知
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a53f9d451f2c5bced7976faaeb730c.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e01b6fb6a1c7a895df528382a5583444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc69ca610ddbc217c802ababef5a853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23a53f9d451f2c5bced7976faaeb730c.png)
您最近一年使用:0次
2019-05-09更新
|
621次组卷
|
2卷引用:【市级联考】福建省龙岩市2019届高三5月月考数学(理科)试题