名校
解题方法
1 .
的内角A,B,C所对边分别为a,b,c,点O为
的内心,记△OBC,
的面积分别为
,
,
,已知
,
.
(1)若
为锐角三角形,求AC的取值范围;
(2)在①
;②
;③
中选一个作为条件,判断△ABC是否存在,若存在,求出
的面积,若不存在,说明理由.(注:如果选择多个条件分别解答,按第一个解答计分.)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69ce7d8f00ecc91d25bd4f11d92fd1d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0cd4d50968686fccba21140ad42ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)在①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b92627e73facb04d1621a366ca7982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3078fbe0072e04697b7472434850519d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee54e2f63154c353161fdbd804f95802.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-05-01更新
|
1010次组卷
|
3卷引用:四川省泸县第五中学2023-2024学年高二上学期开学考试数学试题
名校
解题方法
2 . 已知
的角
,
,
的对边分别为
,
,
,满足
.
(1)求
;
(2)若
,求
周长的取值范围.
![](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/27a5ac4f606e333aca121e0bbfa29976.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8120119749d4bc28067e73fca7d46cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
3 . 已知
.
(1)求
的值域;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb044fa15647bf7883c22ee7831595be.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd64e79a34d49f4c5fba6d12a88f5da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbe8b4bcd32e5a64ebfd873f8cbb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f798a9af75a091a8be0b71f2038260.png)
您最近一年使用:0次
2023-04-16更新
|
595次组卷
|
4卷引用:四川省泸县第五中学2023-2024学年高二上学期开学考试数学试题
名校
解题方法
4 . 在
中,角A,B,C的对边分别是a,b,c,且满足
.
(1)求角C的大小.
(2)若
,
的面积为
,求边长c的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f47c19c870971262d87327dde165a.png)
(1)求角C的大小.
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
您最近一年使用:0次
2023-03-23更新
|
892次组卷
|
9卷引用:四川省成都市第十七中学2020-2021学年高二上学期期中考试理科数学试题
四川省成都市第十七中学2020-2021学年高二上学期期中考试理科数学试题广东省惠州市惠东县惠东荣超中学2017~2018学年第二学期高二第二次段考试题理科数学试题甘肃省庆阳市宁县第二中学2019-2020学年高二上学期第一次月考数学试题重庆市二0三中学校2023-2024学年高二上学期开学考试数学试题四川省资阳市雁江区伍隍中学校2023-2024学年高三上学期9月月考数学(文科)试题四川省资阳市雁江区伍隍中学校2023-2024学年高三上学期9月月考数学(理科)试题2015届福建省龙岩市非一级达标校高三上学期期末检查文科数学试卷2014-2015学年重庆市巫山中学高一下学期期末考试文科数学试卷新疆乌鲁木齐市第一中学2018-2019学年高一下学期期中数学试题
5 . 已知函数
,将
的图象向左平移
个单位得
的图象.
(1)求
的最小正周期与单调递增区间;
(2)若方程
在
有且仅有一个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad53793131789b2f901ede5a8ece26b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61d28742c2436d805345fcc95ac860c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1ee219f4b7c765a284559d2c185bc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6126d890fae5618cb3e38a5950a4946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-03-17更新
|
332次组卷
|
2卷引用:四川省德阳市什邡市什邡中学2023-2024学年高二上学期10月月考数学试题
6 . 在①
,②
,③
的面积为
,这三个条件中任选一个,补充在下面问题中,并加以解答.
在
中,角
所对的边分别为
,且__________.
(1)求角
;
(2)若
,
的内切圆半径为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3371592e18d2764183bd1f04874f55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e16b31dc428f0f425ca5b24b288af201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5619fd9e66eedde9b2dde592df76b4e.png)
在
![](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/76f0649064a085fb74c997fb507a9b6d.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e15cbd7c42d7b15d7ba8d2b28ab8df.png)
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-03-12更新
|
533次组卷
|
2卷引用:四川省宜宾市第四中学校2023-2024学年高二上学期开学考试数学试题
名校
解题方法
7 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a711be3a0bdc81438c51b2464c1af2b0.png)
(1)求
的最小正周期;
(2)已知函数
的图象按
变换得函数
的图象
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a711be3a0bdc81438c51b2464c1af2b0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d298e0bf8f44fab39aee2197c7c0e54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa49ef3e4023278ead164c5477f64194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213ccfda14df700015b54f694d08a96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
名校
8 . 已知四棱锥
(如图),四边形ABCD为正方形,面
面ABCD,
,M为AD中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/70a6dead-4a0c-44ff-849a-d76293a687eb.png?resizew=202)
(1)求证:
;
(2)求直线PC与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7fcc62f1c0536d8f82409e8c8df7beb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/28/70a6dead-4a0c-44ff-849a-d76293a687eb.png?resizew=202)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/789c9c79846abc6ba99cf3e575cdae6f.png)
(2)求直线PC与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a03203dd5ac79dd8c6707e4340773359.png)
您最近一年使用:0次
2023-02-26更新
|
773次组卷
|
6卷引用:四川省绵阳市南山中学实验学校2023-2024学年高二上学期期末模拟数学试题(七)
四川省绵阳市南山中学实验学校2023-2024学年高二上学期期末模拟数学试题(七)重庆市主城区七校2022-2023学年高二上学期期末数学试题云南省临沧市民族中学-2022-2023学年高二下学期期中数学试题陕西省西安市周至县第六中学2023-2024学年高二上学期10月月考数学试题云南省大理白族自治州大理市民族中学2023-2024学年高二上学期期中数学试题(已下线)通关练04 空间向量与立体几何大题9考点精练(41题)- 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
名校
9 . 在直角坐标系
中,曲线
的参数方程为:
(
为参数),以坐标原点
为极点,
轴的非负半轴为极轴建立极坐标系,曲线
的极坐标方程为
.
(1)求曲线
的极坐标方程和曲线
的直角坐标方程;
(2)在极坐标系中,射线
与曲线
交于点
,射线
与曲线
交于点
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9882d1bb575aa6abbfa57722d7eee611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6cf7478b2caa6926bf8a055e050f6b.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)在极坐标系中,射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65125a43aa50b652de8f5614b81f176a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ff888d9abc60d2b1e773729bc2c22f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2023-02-15更新
|
1663次组卷
|
9卷引用:四川省广安市第二中学校2022-2023学年高二下学期第一次月考数学(文)试题
名校
解题方法
10 . 在
中,
所对的边为
,满足
.
(1)求A的值;
(2)若
,求
的周长.
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b0a033cdbd6cbe14b19352f5c5fd49f.png)
(1)求A的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966bdb5fb48bfbf1fb2ce2f528c01766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2023-01-06更新
|
407次组卷
|
6卷引用:四川省成都市东部新区养马高级中学2022-2023学年高二下学期第一次月考数学试题(文科)