已知向量
与向量
垂直,其中
为第二象限角.
(1)求
的值;
(2)在
中,
分别为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27db32ae8ec9cca40cc203fe8f7ee49.png)
所对的边,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09fd67d49a8b71008d4a96bea96611e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e792fa69ecec6e8ebb25e60835076cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27db32ae8ec9cca40cc203fe8f7ee49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/194741f4d2ae7ee44cafca780361446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa0eaa38f02ace7f21968c0cc1e787fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30c5081bfcfe98b006ab0d0c446feba.png)
2011·广东深圳·一模 查看更多[1]
(已下线)2011届深圳市高三第一次调研考试数学文卷
更新时间:2016-11-30 14:55:11
|
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解答题
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适中
(0.65)
【推荐1】已知
是角
终边上的一点,且
.
(1)求
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(2)求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26b31ae336856e3a2102497132c0642.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7703c12ddf1769ae707594fd5675261d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdef7d09515a5853b687c952e2ac152e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef87dfcced9fe659c59bb2bd21c69c7.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】已知
,
都是锐角,
,
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6b1670b2b446ace5bc12d7385b8e78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b4143ebd4910aa059e700e186d26707.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/850dba25bf0f5f13541bf9b6ec12b84d.png)
(2)求
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您最近一年使用:0次
【推荐1】在平面直角坐标系
中,以
轴为始边作两个锐角
,
,它们的终边分别与单位圆相交于
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(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374d388d837e6e7e845e1e45dd3943b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665a206117a3c88cf5e397e98a8ba075.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
(2)求
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解答题-问答题
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适中
(0.65)
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【推荐2】已知均为锐角,且
.
(1)求
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(2)求值:
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您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐1】在
中, 角
的对边分别为
, 若
.
(1)求证:
;
(2)对
, 请你给出一个
的值, 使不等式
成立或不成立,并证明你的结论.
![](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/03290185439a3e7332f41ea038f43eaf.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46abdcf989e4e121de989f73340a55f9.png)
(2)对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f093c61867ee4ce75f951d46b9b123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abad0f9bfeee920a0444badf1701a2f.png)
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解答题-问答题
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适中
(0.65)
【推荐2】
的内角
,
,
所对边分别为
,
,
,且
.
(1)求
;
(2)若
,
,求
的周长.
![](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/cd5830e373242d3345bde0e5885f6d1a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46484e74b47e1664ce1700526e632656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f9a6a07f6952d9874e816065aa30e5.png)
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您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知向量
,
,
,且
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93f06ce0675b98acbc28c2392460117f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b102cc8f9f598b9dc96f2138ee5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5772da5629e971c13b19a3601b1308fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bb58883caf5c8ca1e94389839d294b6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433877d755eb8dce707299d1c4eb7186.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
名校
解题方法
【推荐2】如图,在
中,
,
,
,将
绕
点逆时针旋转
得到
,连结
,
,设
为
中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/d082c4ca-dd0a-42a0-8ca3-663a5054b07e.png?resizew=138)
(1)若
(
),则
__________;
(2)求
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ec371d5dbc19d236bf8a1f084031e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3dfcd8aff269dd5aba398816490c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/18/d082c4ca-dd0a-42a0-8ca3-663a5054b07e.png?resizew=138)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2605dc6f45fb5936f950cfe7d5322461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b257e6bd202cd2dfd30b4ae8445129.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890c4bcc71c6ba24301e364c29a6a05a.png)
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