名校
解题方法
1 . 在
中,角
所对的边分别是
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64a935b847ecea955e8aa1ea3b48cac.png)
(1)求角
的大小;
(2)如果
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64a935b847ecea955e8aa1ea3b48cac.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57575ea766f99dae87ce393a504167e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f19eabf190c55447f8d943f95b7f311e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-04-03更新
|
98次组卷
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3卷引用:江西省贵溪市实验中学高中部2021-2022学年高二(三校生)上学期期末考试数学试题
2010·重庆·一模
名校
2 .
为
的两内角,则“
”是“
”的如下哪个条件
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0298be28ab5e508504aeb3280fdf015f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a82f3c59db131a89322b7fba81b6ec43.png)
A.充分不必要 | B.必要不充分 | C.不充分不必要 | D.充分必要 |
您最近一年使用:0次
名校
解题方法
3 . 已知
分别为锐角
三个内角
的对边,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5db1fb3b00f0072b16033b65940f60d7.png)
(1)求
的大小;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](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/5db1fb3b00f0072b16033b65940f60d7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22ccd637b1ceaf1420f12c4cf4f430e.png)
您最近一年使用:0次
2017-11-07更新
|
523次组卷
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4卷引用:江西省宜春中学2021-2022学年高二下学期开学考数学(理)试题
2011·浙江台州·一模
4 . 已知函数
.
(Ⅰ)求
的最大值及取得最大值时的x集合;
(Ⅱ)设
的角
的对边分别为
,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34d6ef2bab338c1b3f9d90f205eb1a6b.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(Ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/f614d1629e4bf4c3bbae86a1145333ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/980ab4deb9e7f2bc9288787f5243a4d2.png)
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2016-11-30更新
|
1262次组卷
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3卷引用:江西省南昌市三校(一中、十中、铁一中)2023届高三上学期第一次联考(11月)数学(理)试题
名校
5 . 在
中,内角
的对边分别为
,且
,若
,则
的面积为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/b39760770579211482546ea2c65b21ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650e9b4e1d7a366ce9c47649a5b4f021.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次
2016-12-05更新
|
412次组卷
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3卷引用:江西省丰城市第九中学2023届高三上学期入学考数学(理)试题
名校
解题方法
6 . 正三角形
的边长为2,将它沿高
翻折,使点B与点C间的距离为
,此时四面体
外接球表面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
457次组卷
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3卷引用:江西省景德镇一中2022-2023学年高二(19班)上学期期中考试数学试题
江西省景德镇一中2022-2023学年高二(19班)上学期期中考试数学试题2016届河北省武邑中学高三上学期期末考试理科数学试卷(已下线)第三章 折叠、旋转与展开 专题三 球与翻折 微点3 球与翻折综合训练
名校
7 . 在
中,角
对边分别为
,角
,且
.
(1)证明:
;
(2)若
面积为1,求边
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.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/fad1398c5c60229f89a704e2a25ba7f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7970798814b57784dd7f7e2288e3db7.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfc4b8f3af4369cbdd3f2a48679a3ea.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
您最近一年使用:0次
2016-12-04更新
|
398次组卷
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2卷引用:江西省景德镇一中2021-2022学年高二(普通班)下学期期末考数学(理)试题