名校
1 . 在
中,若
,则角
的大小为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/590e08729470930e74df5018cdd59e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-08-23更新
|
2558次组卷
|
5卷引用:上海市曹杨二中2018-2019学年高一下期末数学试题
上海市曹杨二中2018-2019学年高一下期末数学试题上海市曹杨二中2018-2019学年高三上学期期末数学试题(已下线)上海期末真题精选50题(小题压轴版)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)上海市曹杨第二中学2022-2023学年高一下学期期中数学试题(已下线)第01讲 两角和与差的三角函数-【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)
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2 . 为了研究问题方便,有时将余弦定理写成:
,利用这个结构解决如下问题:若三个正实数
,满足
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ba07a669b1f519431dd0a73709f990.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf36abf2bd948004cbfdeec58aba5b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96e56783b70e24be8ed15d0f8df94af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/775823e86113632b8a4cde46a44a13a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e215f6a2fc60a1dd744769e3d06cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0ba07a669b1f519431dd0a73709f990.png)
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2019-08-23更新
|
1125次组卷
|
5卷引用:上海市曹杨二中2018-2019学年高一下期末数学试题
3 . 如图,某学生社团在校园内测量远处某栋楼
的高度,
为楼顶,线段
的长度为
,在
处测得
,在
处测得
,且此时看楼顶
的仰角
,已知楼底
和
、
在同一水平面上,则此楼高度![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
____
(精确到
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32104db790d4e50ec851086996c62020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe6c13b8f82ab4d6f721cb6dd01f4e4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ab3a5d1ea0c636cb9e215a2ea325ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0569f82414ff293c1404e1757e4ec74f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/e1ec5d678ec42846e1d28301e3bfd4be.png)
![](https://img.xkw.com/dksih/QBM/2019/8/22/2274179592306688/2275002089218048/STEM/9dd18685883049c29995461650a1d477.png?resizew=12)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef959a420dc4a40d40e1960a68d1acce.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/17/beb1ca2f-1447-4aea-ae39-69bdabf510a0.png?resizew=147)
您最近一年使用:0次
2019-08-23更新
|
498次组卷
|
4卷引用:2019年上海市长宁(嘉定)区高三上学期期末质量检测(一模)数学试题
2019年上海市长宁(嘉定)区高三上学期期末质量检测(一模)数学试题2019年上海市长宁区、嘉定区高三上学期期末教学质量检测(一模)数学试题【全国百强校】河北省邢台市第一中学2018-2019学年高一下学期第一次月考数学试题(已下线)专题4.7 解三角形及其应用举例-《2020年高考一轮复习讲练测》(浙江版)(讲)
4 . 设
的内角A,B,C的对边为
,b,c.已知
,b,c依次成等比数列,且
,延长边BC到D,若
,则
面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144228917cf098d9417c0b5d3e82122b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb3d1070981fed5ca65a34bb2282e6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f8f01137e92c0f2e63467036ae9cce.png)
您最近一年使用:0次
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5 . 在
中,角
、
、
所对的边分别为
、
、
.
(1)若
、
、
成等比数列,且
,求
的值;
(2)若
、
、
成等差数列,且
,求
的周长
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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)
(1)若
![](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/55493e331f88d3d1c396e92b46c97ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44a5ac2c5aa4d08c4ca88546a581649a.png)
(2)若
![](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/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2019-08-21更新
|
388次组卷
|
3卷引用:上海市复兴高级中学2019年5月高三模拟数学试题
名校
6 . 已知函数
的最小正周期为
,且直线
是其图象的一条对称轴.
(1)求函数
的解析式;
(2)在
中,角
、
、
所对的边分别为
、
、
,且
,
,若
角满足
,求
的取值范围;
(3)将函数
的图象向右平移
个单位,再将所得的图象上每一点的纵坐标不变,横坐标伸长为原来的
倍后所得到的图象对应的函数记作
,已知常数
,
,且函数
在
内恰有
个零点,求常数
与
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26e837e4a21c799dcac2141289a1c23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c366dcd7fdd83db8578a19499ffed0.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/7c08bf0a121ade364913ff0d231f0315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff0e2b7a010fe868b8806a711624b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c775442038b695b27ac052e3486c6c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae24688d4c45aad43e9af0b7bbfda6b.png)
(3)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd9736828195f010db4e1f0a9dea7a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faad4a9ecfb6b5f5b1dc3e2f43ad219f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0b396c8cd1754fb25acce89a06d280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151e5633a5d0cc30b254167e3dda5803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
您最近一年使用:0次
2019-08-21更新
|
4569次组卷
|
8卷引用:上海市控江中学2018-2019学年高一下学期期末数学试题
上海市控江中学2018-2019学年高一下学期期末数学试题(已下线)上海市华师大二附中2019-2020学年高一下学期期中数学试题(已下线)上海市华东师范大学第二附属中学2019-2020学年高一下学期4月月考数学试题(已下线)专题2.2 三角函数【专项训练】-2020-2021学年高一数学下学期期末专项复习(沪教版2020)(已下线)第7章 三角函数(章节压轴题专练)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)江苏省南京师大附中2019-2020学年高二上学期期初模拟数学试题福建省永春第一中学2020-2021学年高一下学期期中考试数学试题辽宁省大连市大连育明高级中学2022-2023学年高一下学期期中数学试题
名校
7 . 在
中,角
所对的边为
,若
,且
的外接圆半径为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
您最近一年使用:0次
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8 . 在△
中,角
、
、
的对边分别为
、
、
,且满足
.
(1)求角
的大小;
(2)若
,求△
的面积
最大值及取得最大值时角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/5bb347da2c96679eb8eecc856d666f7a.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a43663c53a1dba146e192cef0f913bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2019-08-16更新
|
625次组卷
|
2卷引用:上海市向明中学2018-2019学年下学期高一5月月考数学试题
9 . 某船在
处看到灯塔
在北偏西
方向,它向正北方向航行50海里到达
处,看到灯塔
在北偏西
方向,则此时船到灯塔
的距离为_____ 海里.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bb27086a9f9d5d3979dd47e1ec84ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a8058afe4d6d74c5e7e39b16787748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
名校
10 . 如图,某住宅小区的平面图呈圆心角
为的扇形
,小区的两个出入口设置在点
及点
处,且小区里有一条平行于
的小路
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/f0303d3b-69dc-43d0-bb29-f35d9dd51555.png?resizew=212)
(1)已知某人从
沿
走到
用了
分钟,从
沿
走到
用了
分钟,若此人步行的速度为每分钟
米,求该扇形的半径
的长(精确到
米)
(2)若该扇形的半径为
,已知某老人散步,从
沿
走到
,再从
沿
走到
,试确定
的位置,使老人散步路线最长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a77343ecde1c2665df291761b6563.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49eebe6f8dfb225b51acdb0290bf8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f57f005a9592ea89ae2a2cee6598c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/924497afe7626e8cbad1fb3b9723184f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/f0303d3b-69dc-43d0-bb29-f35d9dd51555.png?resizew=212)
(1)已知某人从
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f57f005a9592ea89ae2a2cee6598c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/782a7b8656a7ad52519d7f2079ed6114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec00b28e3a25c4025287d877b7483f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49eebe6f8dfb225b51acdb0290bf8ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e6f1af4b44b2e97e8f319bab4ae9010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(2)若该扇形的半径为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30fbeb2f1f6ee7279885520d889bfc47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3f57f005a9592ea89ae2a2cee6598c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b63d2504bd3ecce8c10560b142356f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2019-07-09更新
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1179次组卷
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3卷引用:上海市复旦大学附属中学2023-2024学年高二上学期开学考试数学试题