名校
解题方法
1 . 如图所示,位于
处的信息中心获悉:在其正东方向相距
海里的
处有一艘渔船遇险,在原地等待营救
信息中心立即把消息告知在其南偏西
、相距
海里的
处的乙船,现乙船朝北偏东
的方向沿直线
前往
处救援,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4961a7dd688b8a12db7d1d3480c6b87f.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/c90282d4a37c9a20620d4bbb0c263cae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4961a7dd688b8a12db7d1d3480c6b87f.png)
![](https://img.xkw.com/dksih/QBM/2022/3/7/2931154102099968/2937673275121664/STEM/45c5b2924fae486aa2c442588b9d9cb4.png?resizew=247)
您最近一年使用:0次
2022-03-16更新
|
457次组卷
|
6卷引用:河南省信阳市浉河区新时代学校2021-2022学年高二上学期第一次月考数学试题
11-12高一下·贵州遵义·期中
2 . 已知函数
.
(1)求函数
的最小正周期及单调递增区间;
(2)
内角A、B、C的对边长分别为a、b、c,若
,
,
,且
,求角B和角C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e469cd02d6556194da694749e4cc4ef.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031189fdcb9795b2d95cb9453bc56002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
您最近一年使用:0次
2022-01-02更新
|
494次组卷
|
15卷引用:河南省重点高中2021-2022学年高二上学期阶段性调研联考二理科数学试题
河南省重点高中2021-2022学年高二上学期阶段性调研联考二理科数学试题(已下线)文科数学-2021年高考押题预测卷(新课标Ⅰ卷)02(已下线)2011-2012学年贵州省遵义四中度高一下学期期期中数学试卷(已下线)2011-2012学年吉林省汪清六中高二下学期期末考试文科数学试卷2016届辽宁省沈阳市二中高三上学期期中理科数学试卷2016届辽宁省沈阳市二中高三上学期期中文科数学试卷2015-2016学年湖南衡阳八中高二下期末数学(理)试卷广西钦州市钦州港经济技术开发区中学2018届高三12月月考数学(文)试题贵州省遵义市第四中学2017-2018学年高二上学期第一次月考数学试题云南省红河州泸西一中2017─2018学年高二上学期期末考试理科数学试题云南省红河州泸西一中2017─2018学年高二上学期期末考试文科数学试题【市级联考】江西省吉安市2019届高三上学期五校联考数学(文)试题广东省执信中学2019-2020学年高二上学期9月月考数学试题江西省奉新县第一中学2020-2021学年高二上学期第二次月考数学(理)试题广东省顺德区德胜学校2021-2022学年高一下学期期中数学试题
名校
解题方法
3 . 在
中,角
、
、
的对边分别为
、
、
,
,
.
(1)求
;
(2)若边
上中线
,求
的周长.
![](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/f7f85678de64dcc06b3efcdb6a127170.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002a39ecdc9dd25d9c790e1aac277481.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
(2)若边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d37a75237da250420c446ee31cb43265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
4 . 已知
.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a70def8daf8b0691ce35f1e850bbd9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aac1e3e8b0238fcb3afc0f549bfcd3f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-11-10更新
|
963次组卷
|
5卷引用:河南省湘豫名校联盟2021-2022学年高三上学期11月联考理科数学试题
河南省湘豫名校联盟2021-2022学年高三上学期11月联考理科数学试题河南省濮阳市第一高级中学2021-2022学年高三上学期第三次质量检测数学(文)试题河南省杞县高中2021-2022学年高三上学期第四次月考文科数学试题(已下线)第10讲 二倍角的正弦、余弦和正切公式-【帮课堂】2021-2022学年高一数学同步精品讲义(人教A版2019必修第一册)(已下线)解密04 三角函数恒等变换(讲义)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(新高考专用)
名校
解题方法
5 . 在
中,角
所对的边分别为
,
.
(1)若
,求
的值;
(2)若
的面积为
,求边长
的最小值.
![](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/b6a0e758578cebee3d9f4aa5acf5fe77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69aba5b9f6f87b4cf9b7ea401ea9cbe1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ee608882881caff2f1e223177424ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1311f32edf13f8caee5edb03f24a7ba.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2021-10-15更新
|
866次组卷
|
2卷引用:河南省联考2021-2022学年高三核心模拟卷(上)文科数学(四)
解题方法
6 . 在
中,角
,
,
的对边分别是
,
,
,且
,
,
.
(1)求
的值;
(2)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/8b73abfe4bc26b1ded680d7abb1a2cac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01a832ecd4bd6b6a373d0e50bc02e063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce3c8d127f4c4917702f4ecb0758465.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4ba835f4f432222f7972df7b597f35.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/328f4d3a80a80e08c3fd6544eadcb98f.png)
您最近一年使用:0次
解题方法
7 . 已知
,
.
(1)求tan
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00c1fc049a87888752174ddea4187c27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68773d21eb81ed550ab85ca0999c03c3.png)
(1)求tan
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c8151a78d08ccfcd3dae332c16fbaa2.png)
您最近一年使用:0次
解题方法
8 . 若
,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c154daf98ee6852724f392bec2d4ef0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d900b05a4272c0b6c979f97b2b2b6a0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa737a8a6e92654b9ed54f105457932.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 平面直角坐标系
中,
为第四象限角,角
的终边与单位圆
交于点
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59942783283236b3805a56c0e0dfbb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bffd29b2e8192d673308bdf8d5cb6cab.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 在
中,角
、
、
所对的边分别为
、
、
,若
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da782c3eabafe30ee6c7c898ba8d814.png)
,则
的形状是___________ .
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f570a35ee91d04ac3587acd8fef3d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da782c3eabafe30ee6c7c898ba8d814.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e697462a89512419773881f36347c578.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-04-28更新
|
1144次组卷
|
3卷引用:河南省名校联盟2020-2021学年高三下学期4月联考(二) 数学(文科)试题