名校
1 . 在
中,
、
、
分别为内角
、
、
所对的边,
且
,若点
是
外一点,
,
.则平面四边形
的面积的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/31fa9e3f1347c15c7b3141692a74bc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac73d1e1a6a7f2a941f4393dc4334998.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9b5996067a3fc9adcf0ca178dddf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea16ceca816f7d3d50650af141baf42.png)
A.![]() | B.![]() | C.3 | D.![]() |
您最近一年使用:0次
2021-08-03更新
|
426次组卷
|
5卷引用:四川省内江市2020-2021学年高一下学期期末数学试题
2 . 如图,设A,B两点在青衣江的两岸,一测量者在A的同侧所在的江岸边选定一点C,测出
的距离为100
,
,
.则A,B两点间的距离为( )
![](https://img.xkw.com/dksih/QBM/2021/7/14/2764085979316224/2777734341132288/STEM/968e6ce92678480c933403bce8e743fd.png?resizew=187)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27e47690ed332c573186992b6d25654.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8aad200f47027b65a5872c21a5cf3f5.png)
![](https://img.xkw.com/dksih/QBM/2021/7/14/2764085979316224/2777734341132288/STEM/968e6ce92678480c933403bce8e743fd.png?resizew=187)
A.![]() | B.100![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
3 .
的内角A,B,C的对边分别为a,b,c,已知
.
(1)求
;
(2)若
,
的周长为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eae7db13581a215562626006f7698c98.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2c435cd404239eba4f825bfdccb63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-08-02更新
|
461次组卷
|
3卷引用:四川省南充市2020-2021学年高一下学期期末数学试题
名校
解题方法
4 . 已知
的内角A,B,C所对的边分别为a,b,c.向量
,
且
.
(1)求角A;
(2)若
,求
周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01add27c9065ce22d7437a3463cefb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c857f60e49e1b07639ed35ab4f50abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33ee59964f020fc52b5ba66a3f5fcc3c.png)
(1)求角A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-08-02更新
|
492次组卷
|
2卷引用:四川省雅安市2020-2021学年高一下学期期末数学试题
名校
解题方法
5 . 已知锐角
的内角A,B,C所对的边分别为a,b,c,若
,
,则
面积的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bd5b9bbd3d22bd2cef53dd4b9691257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/723bd39f26f0a0b580d4d99ad32cc2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-08-02更新
|
967次组卷
|
5卷引用:四川省雅安市2020-2021学年高一下学期期末数学试题
名校
解题方法
6 . 在
中,若
,且
,则该三角形的形状是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b74f6929393d07a9399ae179479bf71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13beee08c419ad5116b836111bec9fe6.png)
A.直角三角形 | B.钝角三角形 |
C.等边三角形 | D.等腰直角三角形 |
您最近一年使用:0次
2021-08-02更新
|
390次组卷
|
3卷引用:四川省雅安市2020-2021学年高一下学期期末数学试题
解题方法
7 . 在
中,三个内角
、
、
所对的边分别是
、
、
,且满足
.
(1)求出角
的值;
(2)若
,求
的周长的范围.
![](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/80c9ad02cd4068c70b52d28d641c7c62.png)
(1)求出角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解题方法
8 . 如图,在平面四边形
中,
,
,
为等边三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/691e680d-2402-4f85-902d-4ef74f364270.png?resizew=144)
(1)若
,求
的长;
(2)求四边形
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/691e680d-2402-4f85-902d-4ef74f364270.png?resizew=144)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d09196d6643e64ab5b9b5df02d98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)求四边形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
9 . 数学兴趣小组为了测量电视塔
的高度,在塔底水平面上设置两个观测点
,
,
间距离为108米,在点
处测得
,
的张角为60°,在点
处测得
,
的张角为75°,测得点
的仰角为60°,则塔高![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
______ 米.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
![](https://img.xkw.com/dksih/QBM/2021/7/13/2763452371599360/2776599745626112/STEM/20747667a2eb4fb8849307c8b553cf1f.png?resizew=125)
您最近一年使用:0次
2022高三·全国·专题练习
名校
解题方法
10 . 在
中,角
,
,
的对边分别为
,
,
,若
,
,则
面积的最大值为( )
![](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/5ad422f46c6229d6c0b2df9352c4f9de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c807609a6a4a9008e66723409f23ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1 | B.![]() | C.2 | D.![]() |
您最近一年使用:0次
2021-07-31更新
|
1407次组卷
|
7卷引用:四川省成都市蓉城名校联盟2020-2021学年高一下学期期末联考理科数学试题
四川省成都市蓉城名校联盟2020-2021学年高一下学期期末联考理科数学试题湖南省长沙市明达中学2020-2021学年高二下学期入学考试数学试题(已下线)专题6.11 解三角形综合练习(二)-2022届高三数学一轮复习精讲精练(已下线)增分专题二 解三角形范围与最值问题湖南省长沙麓山国际实验学校2022-2023学年高二上学期入学考试数学试题湖南省长沙市明德中学2022-2023学年高二上学期入学考试数学试题河南省禹州市北大公学禹州国际学校2022-2023学年高二上学期开学考试数学试题