名校
1 . 已知
的面积为
,且
且
.
(1)求角
的大小;
(2)设
为
的中点,且
,求线段
的长度.
(3)在满足(2)的条件下,若
的平分线交
于
,求线段
的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56ffcd36ac5d27fe261b49b4ee86bfb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb980da8e86b4cfd322616dc84fc6e.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c43f7ca25ae65ac6c4b57a42f166af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)在满足(2)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
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名校
解题方法
2 . 在
中,角
所对的边分别为
,向量
,若
,则角
的大小为( )
![](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/be9f7341499f3c46595ae6d2794d65d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b5f7053c7a9f7582246ca606d55f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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2卷引用:福建省厦门市杏南中学2023-2024学年高一下学期3月月考数学试题
名校
解题方法
3 . 三个数
,
,
的大小顺序是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e11452a83da4df4eb8d54527fce3e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1c72bf38505dcca786539a1d8e85c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc5b58278605488b8ec900d0ff04c826.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 如图,在平面四边形
中,
,
,
,
.
的长度;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5b30165a5ae2b3e8f62462ec5efb836.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c1ac2e11788860424508ea9e80cf89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b0f0cdb98fe345dccfa96b3be72b31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301baf6cc0628366e6661a87a2d93ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b076e0add5df35950a0c10b07141131e.png)
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2024高一下·全国·专题练习
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解题方法
5 . 在锐角
中,若
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92adfa15c4983340d53b2acdf44e6ae1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5201fc26d013f6fb889933c0e32f5c53.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-30更新
|
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4卷引用:福建省莆田第二十五中学2023-2024学年高一下学期期中考试数学试题
福建省莆田第二十五中学2023-2024学年高一下学期期中考试数学试题福建省龙岩市上杭县第一中学2023-2024学年高一下学期5月月考数学试卷(已下线)高一数学下学期期中模拟卷(新题型)-同步题型分类归纳讲与练(人教A版2019必修第二册)四川省广元市川师大万达中学2023-2024学年高一下学期5月月考数学试题
6 . 已知
,
为
上一点,且满足
. 动点
满足
,
为线段
上一点,满足
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e39fda3cda5ddc03b085413f2030aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8f750b00c80522cbf882b082def2ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaea990fecc2f3d041f04e0350109545.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/60873ab38fcd6afbdcd8c1416a528a13.png)
A.若![]() ![]() |
B.当![]() ![]() ![]() |
C.点![]() ![]() |
D.![]() ![]() |
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|
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2卷引用:福建省泉州市安溪县2023-2024学年高一下学期期中考试数学试卷
名校
解题方法
7 . 已知在
中,角
所对的边分别为a,b,c,若
,
,则
的取值范围是( )
![](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/03838f7c17153c691c274c587af2e329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4329cee2081984d3e10e4651caa8dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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4卷引用:福建省福州市八县(市、区)协作校2023-2024学年高一下学期4月期中考试数学试题
福建省福州市八县(市、区)协作校2023-2024学年高一下学期4月期中考试数学试题(已下线)江苏省南京市六校联合体考试2023-2024学年高一下学期4月期中数学试题变式题1-5(已下线)专题05解三角形压轴小题归类(2) -期末考点大串讲(苏教版(2019))吉林省长春市第二中学2023-2024学年高一下学期第二次学程考试(6月)数学试题
解题方法
8 . 如图,在
中,已知
,
,
,且
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b4c89dbae99c771f6dea808c2231a0.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2688a00327f7f96de6a77ab9b1c9ae7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b4c89dbae99c771f6dea808c2231a0.png)
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名校
解题方法
9 . 在
中,a,b,c分别为A,B,C的对边,则下列叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() |
D.若角C为钝角,则![]() |
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10 . 秦九韶是我国南宋时期的著名数学家,他在著作《数书九章》中提出,已知三角形三边长计算三角形面积的一种方法“三斜求积术”,其公式为:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1343936f0c49edcc38150b7b7c43e7b5.png)
.若
,
,
,则利用“三斜求积术”求
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1343936f0c49edcc38150b7b7c43e7b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fabda43f599d802a6f71e0db08f49686.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5248f004abb3f4132fe5edc6694fbbe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55493e331f88d3d1c396e92b46c97ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-04-21更新
|
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