名校
解题方法
1 . 已知三棱锥
,PA,PB,PC两两垂直,
,
,在线段BC上任取一点M,则
的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3eb538f36e6e722e4ce125266b99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e808897e0e659740988fb3311f610dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a29c3191adf869ac08c82725e4e7ae3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 . 已知在四边形
中,
,
,
,且
,
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e0c5cb53fd85b7a23f0580df6bb49a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df049f15adb6667113ceee3a6638cd0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5f58d0919b618868df14add12c59ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f71211e891243960e8620d78ce78e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa75042a1b71b01f96b68f17aa5893a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9f63d194aa0d4091618b6f41f569ee2.png)
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名校
3 . 已知
,
分别是双曲线
的左、右焦点,点P是双曲线上一点,若
,且
的最小内角为
,则双曲线的标准方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08f24ad677d24612c937448cb583614d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3377c0c2bcd334a93133cdd37f34ed88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93df120ce587ab0256211f67882f5cd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-04-27更新
|
1827次组卷
|
9卷引用:江西省临川第一中学2022届高三4月模拟考试数学(文)试题
江西省临川第一中学2022届高三4月模拟考试数学(文)试题(已下线)2022年高考天津数学高考真题变式题16-18题(已下线)2022年高考天津数学高考真题变式题7-9题(已下线)2.6.1 双曲线的标准方程(1)(已下线)专题39 双曲线及其性质-13.2.1 双曲线的标准方程 (同步练习提高篇)(已下线)3.2.1 双曲线的标准方程(2)天津市南开区2024届高三上学期阶段性质量监测数学试题(二)辽宁省沈阳市、大连市2023-2024学年高二上学期教学联盟大联考数学试题
解题方法
4 . 在
中,内角
的对边分别为
,且
.
(1)求角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)已知
为
边上靠近点 A 的三等分点,且 ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cd59df103a1c99cb9c51d9a7da88cc.png)
的面积为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb6c43c5a5a383b223dbc1a5766a5f9.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5cd59df103a1c99cb9c51d9a7da88cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7f216716d2a3bd7146df3152e6d3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
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解题方法
5 . 如图,在圆内接四边形
中,
.
![](https://img.xkw.com/dksih/QBM/2022/4/25/2965525560279040/2966729020694528/STEM/54adbc851c54477dbd4e4243b46165f1.png?resizew=187)
(1)求
;
(2)求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b852db839b24c967fa263eddc4d1f96.png)
![](https://img.xkw.com/dksih/QBM/2022/4/25/2965525560279040/2966729020694528/STEM/54adbc851c54477dbd4e4243b46165f1.png?resizew=187)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
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名校
6 . 在
中,内角
的对边分别为
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333a487cf34d89d08f8acebc50d913e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfb4f8e1df833c5a7da2e37ad0e1219.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-04-26更新
|
538次组卷
|
2卷引用:江西省临川第二中学、临汝中学2021-2022学年高一下学期期中考试数学试题
7 . 在锐角
中,内角
,
,
的对边分别为
,
,
,且
.
(1)求
;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.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/83a5a5d27d70d51445ab76d5b68b5716.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e4edb3110458139b3ffd33a7e27403.png)
您最近一年使用:0次
2022-04-26更新
|
1654次组卷
|
6卷引用:江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(文)试题
江西省赣州市于都县第二中学等六校2021-2022学年高二下学期期中数学(文)试题河北省秦皇岛市2022届高三二模数学试题(已下线)考点07 三角函数的图像与性质-2-(核心考点讲与练)-2023年高考数学一轮复习核心考点讲与练(新高考专用)(已下线)微专题07 三角形中的范围与最值问题(1)-【微专题】2022-2023学年高一数学常考点微专题提分精练(人教A版2019必修第二册)(已下线)专题15 三角形中的范围与最值问题-2(已下线)重难点突破03 三角形中的范围与最值问题(十七大题型)-1
解题方法
8 . 已知在外接圆半径为
的
中,
,角A所对的边为a,函数
.
(1)求
的最小正周期;
(2)求
在
上的最小值,以及取得最小值时的x的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43d09196d6643e64ab5b9b5df02d98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1872209c71a00530b9c88cdfddf4c4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4148d5c33bfd1d227d349cb3a170592e.png)
您最近一年使用:0次
9 . 从①
,②
这两个条件中任选一个,补充在下面的横线上,并进行解答.
已知锐角
的内角A,B,C所对的边分别为a,b,c,且
,________,
的面积为
.
(1)求A;
(2)求
的值.
注:如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/750b0632de1902a43526bec4e8b281d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da9a8937567205f12509b894831f36e.png)
已知锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edb57d84f9bbcb3e30d4ce7e2e1e8604.png)
(1)求A;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93a5801e8be81aae66c47cc058fe370c.png)
注:如选择多个条件分别解答,按第一个解答计分.
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解题方法
10 . 在
中,内角A,B,C的对边分别为a,b,c,且满足
,则最大内角的余弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75bd849d409ea630b024a8550d400029.png)
您最近一年使用:0次