记
的内角
的对边分别为
,已知
,且
.
(1)证明:
;
(2)若
为锐角三角形,且
,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/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0796c1519cdd91eb2c1762c6a3c54419.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5e009486af263893ca8290be72f258.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59dd4c6a344ae3c8d5a6f2b875015467.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f44c181a2f6ae22d5d52b374768dc57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
22-23高二下·湖南·期末 查看更多[4]
更新时间:2023-07-07 15:48:10
|
相似题推荐
【推荐1】从①
;②
;③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abbf65c6f301f7b5f89de9d2a5f291f.png)
,这三个条件中任选一个,补充在下列问题中,然后解答补充完整的题目.注:如果选择多个条件分别解答,按第一个解答计分.已知△ABC的三个内角A,B,C的对边分别为a,b,c,且 .
(1)求角B的大小;
(2)若
,
,求△ABC的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a0ccc9d46043c0409b5947508a98130.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd7eb27ece605fb5128f9a50cdb11b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abbf65c6f301f7b5f89de9d2a5f291f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db65f0cfbb355e658cb61c094d0ace3c.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6129fbf40a950fc8c516f0abaab21957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】在
中,角
的对边分别为
.已知
,
;
(1)求
的值;
(2)求
的值;
(3)若
,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/9ad06d4972d035c054c09342ba8b803f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51c31691fce647085ff27c9d35f5361.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402f1010e94be78552ed4c45548b1b8.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce76b9090abd10e45aabc0d7ea5f95d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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适中
(0.65)
【推荐1】已知函数
.
(1)求
的最小值;
(2)若函数
图象的两个相邻的对称轴之间的距离为
,求其单调增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038c9dd4a2cd0dbae4a22f4e39a0b05f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ad72d7565699d1ebb741eb0ce12bac.png)
您最近一年使用:0次
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适中
(0.65)
名校
解题方法
【推荐2】
的内角A,B,C的对边分别为a,b,c,且
.
(1)求C;
(2)若
,D为
的外接圆上的点,
,求四边形ABCD面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2be91d4a59c3395ff128b4b8949d85.png)
(1)求C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8631a9528e5a221303c8abbec0d65c92.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
解题方法
【推荐1】在
中,内角
,
,
的对边分别是
,
,
,已知
.
(1)求角
的大小;
(2)若
是线段
上的点,
,
,求
的长.
![](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/d0347ec7758b0080e8a62ae452e162c8.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b9f4b154a308c3613409cc65486644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673ef2d48215ca84a48377f17d6df00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
解答题-问答题
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适中
(0.65)
名校
解题方法
【推荐2】在
中,a,b,c分别是角A,B,C的对边,且
.
(1)求B;
(2)已知
的面积为
,且
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0811ba89d9fa3b89aa2796df65c6e4b9.png)
(1)求B;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a7b42a07de364b83fb755581f25fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-证明题
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适中
(0.65)
【推荐1】记
的内角
的对边分别为
,已知
.
(1)证明:
;
(2)若
,求
的周长.
![](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/c73d455f4ba6a4d1144006fdc79f89c7.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a70d8f920d57c9c3f9cbffaf45c4055.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05784bf1c7578c6c5f0239a6c0c14234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
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适中
(0.65)
解题方法
【推荐2】已知在斜三角形
中,已知
对的边分别为
,且
.
(1)求角
的大小;
(2)若
求角
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95d62b9a1fc994c972781c7013fedba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d46d2380152e6efc40909dad0ae96c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc540112a1b95ad70f40117468e664bb.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa5ecef6f294968840a88acbd270fcbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次