在
中,内角
的对边分别为
的面积为S,已知
,且
.
(1)求
;
(2)求
的取值范围.
![](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/718b5b48053888ab3b234b8cb56a0fc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/904d4815a48db81e2d861783ebb135c7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c825e45000c5eb501bbcd94f29ea2433.png)
更新时间:2024-06-14 16:50:01
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相似题推荐
解答题-问答题
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适中
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名校
【推荐1】设
.
(1)若
,求出满足条件的角
的解集;
(2)当
时,若存在
使关于
的方程
在
时均有解,求实数c的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875fbccb50c0ada9183ef37262aac370.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71a7d6528f2fd79da5ffc9bfbf97b0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e59409c55e271b690491f42fc1f6b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ffe44aa519044b273b0e48286134406.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875fbccb50c0ada9183ef37262aac370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f8e9f49445220aae9d068ea8b1c617.png)
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解答题-作图题
|
适中
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【推荐2】已知函数
.
(1)请用“五点法”列表并画出函数
在一个周期上的图象;
(2)若方程
在
上有解,求实数a的取值范围;
(3)若函数
的图象横坐标变为原来的2倍,纵坐标不变,再向右平移
个单位得到函数
的图象,求
的单调增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28d67e39c511027b1df3e1e9833129cf.png)
(1)请用“五点法”列表并画出函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/338316b0fe50fdea0f2f75aec4c990dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
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解答题-问答题
|
适中
(0.65)
【推荐3】在
中,角
所对的边分别为
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f29f51d24482d226ca16f646b485086.png)
(1)求角
的大小;
(2)当
时,求
的最大值.
![](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/0f29f51d24482d226ca16f646b485086.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09ffc1644c7029219b88232145abbdf.png)
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【推荐1】将函数
图象上所有点向右平移
个单位长度,然后横坐标缩短为原来的
(纵坐标不变),得到函数
的图象.
(1)求函数
的解析式及单调递增区间;
(2)在锐角
中,内角
的对边分别为
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6701e02c0045f484f370875a6e26face.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)在锐角
![](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/c247e6098fd766c9a685004f911b36a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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解题方法
【推荐2】在①
,②
,③
这三个条件中任选一个,补充在下面的横线上,并解答.已知在锐角
中,内角
,
,
的对边分别为
,
,
,____________,求
的取值范围.注:如果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/1ae8319f02578867ea5be7f5025845c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4920a50fe76b52becfc3dac2efcda7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80af251eeadfe4343d36c4198b341c86.png)
![](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/2bf636d8e3c0302c748d6e8163b814ad.png)
您最近一年使用:0次
解答题-问答题
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(0.65)
名校
【推荐1】在
中,内角
的对边分别为
,且满足
.
(1)证明:
成等差数列;
(2)已知
的面积为
,
,求
的值.
![](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/ee3f5361feb17fb23f244488ff856412.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d019e58114a7008512af5e72ad288a.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39c4b4e4f7dd55be05b78b49b08ae4c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b21d821896e322513778985cc57f624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
|
适中
(0.65)
解题方法
【推荐2】记
的内角
的对边分别为
,已知
,
为边
上的中线,
的角平分线
交
于点
.
(1)若
,求
的值;
(2)若
,求
面积的最小值.
![](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/43d09196d6643e64ab5b9b5df02d98a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7c065a2b614dd7ea7a092c8822ed89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb6823a329628699619a39cde927510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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1】△ABC的内角A,B,C的对边分别为a,b,c,已知a=1,B
,△ABC的面积为
.
(1)求△ABC的周长;
(2)求cos(B﹣C)的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06208e44ee3ae77bd78df612a39c1c90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca820a456491348e72587e4fe10bc6.png)
(1)求△ABC的周长;
(2)求cos(B﹣C)的值.
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解题方法
【推荐2】在
中,内角A,B,C所对的边分别为a,b,c,若
,内角A,B,C满足
.
(1)求a的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71812e0762c0aaffb51cfef66156567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54ab0cbb8c3674bb3e6c8a8e6029881c.png)
(1)求a的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04e396fcf0f819428d8ce4db0d4fa1d.png)
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