1 . 在锐角
中,内角
的对边分别为
,且
.若
,则
的取值范围是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
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2 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed048f8198d71922c486d30be6e2b2d.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed048f8198d71922c486d30be6e2b2d.png)
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2017-05-10更新
|
1826次组卷
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4卷引用:安徽省太和中学2016-2017学年高一下学期期中考试数学试题
安徽省太和中学2016-2017学年高一下学期期中考试数学试题(已下线)对点练30 三角恒等变换之和差角公式-2020-2021年新高考高中数学一轮复习对点练湖北省武汉市蔡甸区汉阳一中2021届高三下学期二模数学试题河南省南阳市唐河县鸿唐高级中学2024届高三上学期10月月考数学试题
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3 . 已知定义在
上的函数
满足
,且对于任意
,
,
,均有
.若
,
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/719e6de2f7a86c2f956a760722e7b7eb.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2017-05-07更新
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1189次组卷
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3卷引用:安徽省太和中学2017-2018学年高一上学期期中考试数学试题
安徽省太和中学2017-2018学年高一上学期期中考试数学试题天津市十二重点中学2017届高三毕业班联考(二)数学(理)试题(已下线)2018年12月25日 ——《每日一题》高一人教必修1+必修2(上学期期末复习)-对数函数
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4 . 数列{an}满足an+1+(-1)nan=3n-1,则{an}的前60项和____________ .
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2017-04-20更新
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874次组卷
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2卷引用:2016-2017学年安徽师范大学附属中学高一下学期期中考试数学试卷
5 . 已知方程
,有且仅有四个解
,
,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e154f480b551382f71336d4e46db7ec.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f333593ca705bf7a38e7ddd8e83d2a52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e154f480b551382f71336d4e46db7ec.png)
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2017-04-18更新
|
1956次组卷
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3卷引用:2017高安徽阜阳市三第二次质量检测数学理试卷
6 . 已知
中,
为
的中点,
,
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf3d14eb32760482c383221784ee3f3.png)
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解题方法
7 . 已知周长为定值的扇形
,当其面积最大时,向其内任意投点,则点落在
内的概率是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4819c39c281427826e1b3f7a4c2b720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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8 . 已知
是圆
上一点,且不在坐标轴上,
,
,直线
与
轴交于点
,直线
与
轴交于点
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d295a4cc3a58f9f38ee98337313c81.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c845b36ee32a913193a639afd833a757.png)
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2017-04-13更新
|
1297次组卷
|
3卷引用:2017届安徽省宣城市高三下学期第二次调研(模拟)考试数学(理)试卷
名校
9 . 在平面四边形
中,
,
,
,
,则四边形
的面积的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf10d92f20501e19d25f6f4159aab89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212bfbd5575772ca36d6fc3e7b246e49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2019/6/17/2227582852308992/2227654266683392/STEM/d4240504937d48348a0be0d9b66237e8.png?resizew=168)
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2017-04-11更新
|
1191次组卷
|
9卷引用:2017届安徽省池州市高三4月联考数学(理)试卷
2017届安徽省池州市高三4月联考数学(理)试卷2017届安徽省池州市高三下学期教学质量检测数学(理)试卷安徽省亳州市第二中学2017届高三下学期教学质量检测数学(理)试题四川省成都市龙泉驿区第二中学校2018届高三3月市“二诊”模拟考试数学(理)试题(已下线)《2018-2019学年同步单元双基双测AB卷》 必修五 专题三 正弦定理、余弦定理综合应用B卷【全国百强校】湖北省华中师范大学第一附属中学2019届高三月考(六)数学(理科)试题【校级联考】山东省安丘市、诸城市、五莲县、兰山区2019届高三5月校际联合考试数学(文)试题2019届福建省福建师大附中高三下学期高考模拟(最后一模)数学(理)试题湖南师范大学附属中学2018-2019学年高三下学期第六次月考数学(理)试题
10 . 过
点作直线
的垂线所得的垂足称为点
在直线
上的射影,由区域
内的点在直线
上的射影构成线段记为
,则
的长度的最大值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bb4b435684c89da2f369f20ee0c724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c8aaa3aaf347eccee4b5c13075223eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35b1e8a952aac4f4cdaaf02d868d04.png)
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2017-04-02更新
|
629次组卷
|
2卷引用:安徽省蚌埠市2017届高三第二次数学质量检查理科数学试题