在
中,
.
(1)求
;
(2)再从下列三个条件中选择一个作为已知,使
存在且唯一确定,求
边上的高.
条件①:
;条件②:
;条件③:
的面积为
.
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c552a4604f89a59b89c1f67a4f5269a0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
(2)再从下列三个条件中选择一个作为已知,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec16a357c5fe9ca70ab2c8c7b2b7edb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80df2a4a2a42722dc835702a86c7e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf0a846c047627d83da67efb17b24a4.png)
注:如果选择的条件不符合要求,第(2)问得0分;如果选择多个符合要求的条件分别解答,按第一个解答计分.
2022·北京房山·二模 查看更多[7]
北京市房山区2022届高三二模数学试题北京市西城区北京师范大学附属中学2021-2022学年高一下学期期末考试数学试题北京市一六一中学2023届高三下学期3月阶段测试数学试题(已下线)专题14 解三角形图形类问题-2北京卷专题08解三角形(解答题)(已下线)微专题09 解三角形图形类问题(1)-【微专题】2022-2023学年高一数学常考点微专题提分精练(人教A版2019必修第二册)(已下线)高一下学期期末真题精选(易错60题20个考点专练)-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)
更新时间:2022-05-13 19:24:07
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适中
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解题方法
【推荐1】在①
;②
;③
三个条件中任选一个,补充在下面的问题中,并解决该问题.问题:在
中,内角
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(Ⅰ)求角
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(Ⅱ)若
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(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/24fad29a8069a1b5978f5c2d04575b49.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dee9b24e5a5b826999070eefaddd015.png)
![](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/6de1d395e6c48c0676a1488a299479d9.png)
(Ⅰ)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)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/5a2b6c49408f717134878ef3a5054616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07fc2cf54c33f69b3fb4fb200353a8a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(注:如果选择多个条件分别解答,按第一个解答计分).
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【推荐2】在
中,
,
.
(Ⅰ)求
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(Ⅱ)若
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77995da977330ebbb1b05a6d461403fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce5c810f9c66623ae4fada4438b26fe8.png)
(Ⅰ)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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【推荐1】已知
的内角A,B,C的对边分别为a,b,c,
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(1)求角C;
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06253dff8f13f317081b743b5b8ef7c3.png)
(1)求角C;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解答题-问答题
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适中
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解题方法
【推荐2】已知向量
,
(其中
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的最小正周期为
.
(1)将函数
的表达式化成
(其中
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、
为常数)的形式;
(2)在
中,角
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、
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e6595f33766541fea17f00227e359d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4456675a5dbe545462a22cef9aca8fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18b0691cb23b29bdeb73df2be107a412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
(1)将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea770980e6e8a2a8619d847cd186e133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
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您最近一年使用:0次
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解题方法
【推荐1】已知函数
,在
中,
,且
的面积为
.
(1)求
的值;(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733b85c23093f58100954edbb83c3466.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4403d28a951bd3d8224bd129ec3e9ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1d6201ae8b341fe7c2e578429dddcb.png)
您最近一年使用:0次
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适中
(0.65)
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解题方法
【推荐2】已知四边形
内接于
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e0651a3b5438579eb8282dcbab0502.png)
的半径长.
(2)若
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1e0651a3b5438579eb8282dcbab0502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef77977ede96cb28287eb995cd7e0ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e04730c124543b0318ad074676d43ab.png)
您最近一年使用:0次
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【推荐1】在
中,内角A,B,C所对的边分别为a,b,c,已知
的面积为
,b-c=2,cos A=
.
(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/15c0dbe3c080c4c4636c64803e5c1f76.png)
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(1)求a的值;
(2)求
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您最近一年使用:0次
【推荐2】在
中,内角A,B,C所对的边分别为a,b,c,
的面积为
.
(1)若
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(2)若
,求角C.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6d42b2decfb87b3c0e3ee27c563ed6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e32299baa34ac5cedff7c667f54ea82.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ddf76aa39ac203b2e31956aacb39cd3.png)
您最近一年使用:0次