如图,在平面直角坐标系中,锐角
的终边分别与单位圆交于
两点.
(1)如果
,点
的横坐标为
,求
的值
(2)已知点
,函数
,若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9bc052a11cf1a01445992672dde2836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/954795d1842974a705f9468f3b952ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6abc69c57972a4efb8301e3308ea9ca6.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79f0613108ade04fe4776d8f28d4992e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/886c79daa1d09cf5838dab0d6b591a45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b768fc05abb40be36dde16dd42c2175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/28/151f123d-749d-464c-9eda-ed9fb549bced.png?resizew=194)
更新时间:2017-07-13 09:23:43
|
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】已知
.
(1)当
时,求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69b4cab645c97f6d1710f803ef6a8436.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f55b8836b41be612a52ca9caf97006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc9750c313ee972124cb62c4a6fb7ea.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eedcf83b3eebf23bd4e035c7101f3b5.png)
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【推荐1】在①
,②
,③
这三个条件中任选一个,补充在下面的问题中,并作答.
的内角
所对应的边分别为
,已知___________,
.
(1)求
的值;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45056f5e988f6ae71ca61837eb387911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7402775fde22427741d52b956a7308eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75c79dca37636eb7267036a778ed1b1.png)
![](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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c31dde4202aeea6d861b2775d818d26.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】在
中,设角
所对的边分别为
,且
.
(I)求角
的大小;
(Ⅱ)若
的面积为1,求
.
![](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/2970431351788838f6c0504d156bf9b5.png)
(I)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2d7ddd7ef3b6cde30018bc6a84b9e0.png)
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解答题-问答题
|
适中
(0.65)
【推荐1】已知
,其中
,
,
.
(1)求
的单调递增区间;
(2)在
中,角
,
,
所对的边分别为
,
,
,
,
,且向量
与
共线,求边长
和
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ab48ffe60c36405d6495c2a39c2a20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bdec82b1ee32f907adc465458965431.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e772da19de031ec64070e4da4e1cbebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854f480c60b88b546cb15d3b5622e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
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![](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/78851fe4b929763a7897417e3ecd054d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783d6adfa8fb1352679c5185258d842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/887f42e5f56a758757f6b5a62bc3be7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc0bb42baa020ec2ccf3279935bb15d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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解答题-问答题
|
适中
(0.65)
【推荐2】已知向量
,函数
.
(1)若
,求
;
(2)若
的导函数为
,求
在
上的值域.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed2c77549f7bb1567408872af70b500a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc1525aee9019a25cf71dc6054ec1ce.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b946e3a426e4194cbf7ca181ee67c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85803f39c43c8ea5fea86415f1ce917.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceec72ad249f0ef8750d12a473148688.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4385833f27773180ddb3bffe45aed34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27dca6cf0346fe17ed84c2e7643f0bd.png)
您最近一年使用:0次