19-20高一下·山东济南·阶段练习
名校
解题方法
1 . 某市规划一个平面示意图为如图的五边形ABCDE的一条自行车赛道,ED,DC,CB,BA,AE为赛道(不考虑宽度),BD,BE为赛道内的两条服务通道,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/d1a90dd5-e11a-46c7-9623-c43a74594be2.png?resizew=163)
(1)从以下两个条件中任选一个条件,求服务通道BE的长度;①
;②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cc18690815c775809f9a11d97f7a1b.png)
(2)在(1)条件下,应该如何设计,才能使折线段赛道BAE最长(即BA+AE最大)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c74df3c8d42af10c15c207200cfe1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ab0e77c656955c6dad4b26cc9e5a48.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/d1a90dd5-e11a-46c7-9623-c43a74594be2.png?resizew=163)
(1)从以下两个条件中任选一个条件,求服务通道BE的长度;①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24de16d7afb7fe2c553c645a109b7e96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cc18690815c775809f9a11d97f7a1b.png)
(2)在(1)条件下,应该如何设计,才能使折线段赛道BAE最长(即BA+AE最大)
您最近一年使用:0次
2021-04-21更新
|
952次组卷
|
9卷引用:江西省新余市第一中学2020-2021学年高二年级第六次考试数学(理)试题
江西省新余市第一中学2020-2021学年高二年级第六次考试数学(理)试题内蒙古自治区通辽新城第一中学2021届高三第三次增分训练数学(理)试题(已下线)山东省山东师大附中2019-2020学年高一下学期5月月考数学试题黑龙江省鹤岗市第一中学2020-2021学年高三2月月考数学(文)试题江苏省扬州中学2020-2021学年高一下学期3月月考数学试题黑龙江省鹤岗市第一中学2020-2021学年高三2月月考数学(理)试题(已下线)专题9.1正弦定理与余弦定理(B卷提升篇)-2020-2021学年高一数学必修第四册同步单元AB卷(新教材人教B版)福建省南安市侨光中学、昌财实验中学2021-2022学年高一下学期第4次联考(期中)数学试题辽宁省鞍山市第三中学、华育高级中学2021-2022学年高一下学期期中考试数学试题
名校
解题方法
2 . 如图,在平面四边形
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/ae9a6c57-471c-4399-8c32-fdb00dd130ff.png?resizew=138)
(1)求边
的长;
(2)若
,
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b77f1b9b728f39d0d9618504567eeb96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e90f9f4e44173888a54c624852064a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/ae9a6c57-471c-4399-8c32-fdb00dd130ff.png?resizew=138)
(1)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9680f810b0273a461a9b9bb8b1ec0cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feb67f27bcda7681b19239a199b4c4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-04-08更新
|
3581次组卷
|
8卷引用:江西省八校2020-2021学年高二下学期第四次联考数学(理)试题
江西省八校2020-2021学年高二下学期第四次联考数学(理)试题安徽省示范高中皖北协作区2021届高三下学期第23届联考数学(文)试题重庆市第三十七中学校2020-2021学年高一下学期期中数学试题云南省昆明市第十中学2020~2021学年高一下学期期中考试数学试题(已下线)专题6.1 解三角形大题(面积问题1)-2022届高三数学一轮复习精讲精练安徽省芜湖市第一中学2020-2021学年高一下学期期中数学试题(已下线)专题2.1 解三角形-常规型-2021年高考数学解答题挑战满分专项训练(新高考地区专用)重庆市江津第五中学校2021-2022学年高一下学期期中数学试题
3 . 已知函数
.
(1)若
,求满足条件的x的范围;
(2)若
的最小值为M,
,求
最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d472e697bddc850fe5c0a14c8b675031.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a18be85a0cd3aff37be9ba7f1bdea4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6014c73bd1a7ac84f118245de70bf240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/861d10dff5dee58d08610f6ee2b47a3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a1a2619d11c44fce9fed0155b44a19.png)
您最近一年使用:0次
2021-02-09更新
|
59次组卷
|
2卷引用:江西省宜春中学、高安二中、上高二中、樟树中学、丰城中学2021届高三上学期五校联考数学(理)试题
4 . 在①
,②
的面积为
,③
这三个条件中任选一个,补充在下面的问题中,并解答问题.在
中,角
的对边分别为
, ,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5fe8aa9f26bde96eb1df14bfb42e422.png)
的外接圆的半径为4.求
的周长.
注:如果选择多个条件解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347f1001c7ef728ec091358493d3cb59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e7dc603317eb90974c75efec9f02b1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e799b8435fba6f6905895353c4d4e27.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/d5fe8aa9f26bde96eb1df14bfb42e422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823bcda307515dbcbb0d93ba9a1b59a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
注:如果选择多个条件解答,按第一个解答计分.
您最近一年使用:0次
2020-11-15更新
|
665次组卷
|
5卷引用:辽宁省凌源市2020-2021学年下学期高二尖子生抽测数学试题
5 . 在平面四边形
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/e7f1a2cc-65d7-4f86-9527-fe71f597f389.png?resizew=100)
(1)若
,求
的大小;
(2)求边
长度的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2324805c5dfe2a35787bc3af840586ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac6ec3ec076201289fce3857af370235.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/21/e7f1a2cc-65d7-4f86-9527-fe71f597f389.png?resizew=100)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4e70017618c1d1a247f09b48505f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5157b42da58d55daad27d98b2fec15ff.png)
(2)求边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
2020-09-29更新
|
676次组卷
|
6卷引用:河南省天一大联考2020-2021学年高二(上)段考数学(文科)(一)试题
名校
6 .
中,角
,
,
的对边分别为
,
,
,且
.
(1)求角
的大小;
(2)若
为
边上的中线,
,
,求
的面积.
![](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/feafbac3d2dabfeff84685cd586c0048.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eba77783b1b61d0c95b3901e962268c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65674880bff946ad2e83aa5fd671a630.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2020-09-11更新
|
1204次组卷
|
13卷引用:江西省七校(新余一中、丰城九中等)2020-2021学年高二(常规班)上学期第三次联考数学(理)试题
江西省七校(新余一中、丰城九中等)2020-2021学年高二(常规班)上学期第三次联考数学(理)试题2015-2016学年广东省普宁一中高二下第一次月考理科数学试卷河南省南阳市六校2020-2021学年高二上学期第一次联考数学试题河北省石家庄市正中实验中学2020-2021学年高二上学期第三次月考数学试题2016届河北省石家庄市届高三下学期质量检测二理科数学试卷2016届江西省上高县第二中学高三第七次月考理科数学试卷2015-2016学年江西省临川一中高一下期中数学试卷福建省闽侯第六中学2018届高三上学期期末考试数学(理)试题安徽省宣城市六校(郎溪、旌德、广德、泾县、绩溪、宣城二中)2018-2019学年高一下学期期中联考数学试题陕西省西北工业大学附中2019-2020学年高一下学期3月网上测试数学试题陕西省西安市高新一中2019-2020学年高一下学期3月网课学习第一次阶段性质量检测数学试题(已下线)考点16 解三角形-2021年新高考数学一轮复习考点扫描湖北省十堰市丹江口市第一中学2020-2021学年高一下学期5月月考数学试题
解题方法
7 . 在
中,内角A,B,C的对边分别为a,b,c,已知向量
,
,且
.
(Ⅰ)求B的大小;
(Ⅱ)若
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8f6262669de48777f4ad4396a560004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0526310fb37159453043c794a4c9fd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169488d6e49c88d14e9d23419c255568.png)
(Ⅰ)求B的大小;
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
8 . 已知
的三个内角
,
,
所对的边分别为
,
,
,且满足关系式
.
(Ⅰ)求角
的大小;
(Ⅱ)若
,
,求
的面积.
![](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/a7b8f5b874cdf7d8cc34356e05857abe.png)
(Ⅰ)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8792eaab0b6464e5d07436c64aa751a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
您最近一年使用:0次
2020-09-04更新
|
584次组卷
|
3卷引用:云南省保山市2019-2020学年高二教学质量监测考试理科数学试题
9 . 已知
的内角A,B,C所对边分别为a,b,c,
,
.
(1)求A的值;
(2)从①
,②
两个条件中选一个作为已知条件,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/088aea29559d76ddcd146301f2c92cfd.png)
(1)求A的值;
(2)从①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e712a3ee0c05f35625115745e980e538.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52d62e60396295cd74d03e38978405bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e2f2d7147cf1699fbfdef9cf4af74.png)
您最近一年使用:0次
2020-08-11更新
|
537次组卷
|
2卷引用:云南省昆明一中教育集团2021届高二升高三诊断性考试理科数学试题
名校
解题方法
10 . 已知
的内角
,
,
所对的边分别为
,
,
,且
.
(1)求角
的大小;
(2)若
,
,
依次成等比数列,求
的值.
![](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/15a85eb29a3a20d9970e600f27d3e7d6.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)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/367de5eb4da2eb016a6bfc78e25f4ceb.png)
您最近一年使用:0次
2020-08-06更新
|
945次组卷
|
8卷引用:河南省豫南九校2020-2021学年高二(9月份)第一次联考数学(文科)试题