在
中,角
所对的边分别为
,已知
,
,
.
(1)求
的值;
(2)求
的值;
(3)求
的值.
![](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/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae7888d643678ea18f83f3237732052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17d7bb7bde8a6f08ad26d2e86cba4b6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66df1ae0ae26f6662e3cc86b028a4522.png)
23-24高三上·天津宁河·期末 查看更多[3]
天津市宁河区2024届高三上学期期末数学试题天津市武清区杨村第三中学2023-2024学年高一下学期第一次过程性评价数学试题(已下线)专题11.2正弦定理-重难点突破及混淆易错规避(苏教版2019必修第二册)
更新时间:2024-01-25 23:52:36
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【推荐1】已知
,
,并且
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(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
(2)求
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【推荐2】记
的内角A,
,
的对边分别为
,
,
,已知
,
.
(1)求A;
(2)若
,
是边
上一点,且
是
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.求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](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/1e70eb35e9be9df71ed5d3d0eb21cff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a090171b114c637d46491eb5c5eaace3.png)
(1)求A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9edd36d6a3c792a301b22bff022bd6.png)
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【推荐1】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def668f59cf18535cee81357811bf03a.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def668f59cf18535cee81357811bf03a.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ee907a10fccdbd110c801f7e64c7673.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8fe0eed8937ce3aa34acba66b2ff9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7fab0cc806a8251ec4a62047836868.png)
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适中
(0.65)
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【推荐2】知定义在R上的函数
,其中
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时,
.
(1)求a,b的值;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce485410257c9c1fae9d87ce3e44cc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5e09650aba3c104b91aa0ec583ddc59.png)
(1)求a,b的值;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7863b54185da5a3f1a765e1aa0577e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
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【推荐1】设锐角
的内角A,B,C所对的边分别为a,b,c,且
.
(1)求角A的大小;
(2)若
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;②
这两个条件中任选一个作为条件,试探究符合条件的
是否存在,若存在,求b;若不存在,请说明理由.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7b02511f350c1335744fc92a9bd1270.png)
(1)求角A的大小;
(2)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c387bff2426a7cb8dc7aab5df84e0a95.png)
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解答题-问答题
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适中
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解题方法
【推荐2】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/225b28fc5fbb6ff0e3e742cb6f3a21ed.png)
(1)求角B的大小;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af039cad52ca4e1f1e322277bc81afd.png)
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解答题-问答题
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适中
(0.65)
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【推荐1】如图,在
中,
,
,
,
为
边上的高.
的长;
(2)设
,
.
①若
,求实数
的值;
②求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4b6c682d7b0741fb1f12a073394fc3.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3214979091208aad2d3b0188cda38a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe9e329f2730b2be926b121f1ae04c0f.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beac3c2846dc9bb1a9ad09cd7887b2c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cefc31ea4397677f976ba89e5bbff0d.png)
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解答题-证明题
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适中
(0.65)
解题方法
【推荐2】在
中,角
,
,
所对的边分别是
,
,
,且
.
(Ⅰ)求证:
;
(Ⅱ)若
,
,
成等比数列,求证:
为正三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2039b7cbeac319650813a1246bd3da68.png)
(Ⅰ)求证:
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(Ⅱ)若
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
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