名校
解题方法
1 . 高邮某景区拟开辟一个平面示意图如图的五边形
观光步行道,
为景点电瓶车专用道,
,
,
,
.
的长;
(2)由于受资金的限制,折线步行道
(即
)不能超过
,问景区是否可以铺设该步行道?( 参考公式:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd25debc37496a698e89ed67c9c3dcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056828203cace85b12f954652cca5f25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bde1c1811788d9fe89fa6bdeee73a672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44303e5e10c3639440b37261517b3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)由于受资金的限制,折线步行道
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ba3f676fda6a2aaaa55c9f32874a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f3c8c2d83209681290e22973787483a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dabdd4140bcdcc7b96ff11b677122a4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5780d62363a24cbfd95b9851efbd288.png)
您最近一年使用:0次
2022-04-30更新
|
287次组卷
|
3卷引用:江苏省扬州市高邮市2021-2022学年高一下学期期中数学试题
名校
解题方法
2 .
的内角A,B,C的对边分别为a,b,c,已知
,
.
(1)求A;
(2)若点D在BC边上,AD平分
BAC,且
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1708f1bd241dd38d404f237291191430.png)
(1)求A;
(2)若点D在BC边上,AD平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/665ffcdb7c57534dc184cc840471f2f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29e2b777311ca3f76d2c78782969377.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-04-30更新
|
2114次组卷
|
5卷引用:河北省唐山市2022届高三二模数学试题
河北省唐山市2022届高三二模数学试题(已下线)2022年新高考北京数学高考真题变式题5-8题广东省揭阳市惠来县第一中学2021-2022学年高一下学期第二次阶段考数学试题湖北省黄石市大冶市第一中学2022届高三下学期高考适应性考试数学试题(已下线)2022年新高考北京数学高考真题变式题16-18题
解题方法
3 . 如图,锐角
中,
,延长
到
,使得
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967030070444032/2968496619134976/STEM/fe0b7887-dfdd-4463-b318-51ed2f1249de.png?resizew=189)
(1)求
;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fca3734de79f7f50b552ef62b29dc7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8917dc13ed1b7999dba24a59b35e0de4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96791b1c2d5a9c569dc7c98fc3fb45ee.png)
![](https://img.xkw.com/dksih/QBM/2022/4/27/2967030070444032/2968496619134976/STEM/fe0b7887-dfdd-4463-b318-51ed2f1249de.png?resizew=189)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d06334bfc297b20ffa8fee33bfb6e05.png)
您最近一年使用:0次
4 . 如图,四边形
的内角
,
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/fb050957-7fa0-4673-a160-c057d8b757cc.png?resizew=130)
(1)求
;
(2)若点
是线段
上的一点,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ec574bed5a3c5ab1600e018ffda490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b547d886c528fa2c63016c217b8fb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16dc02090b6e9263555061f14fbc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3d75f67ac92faf413da3cf4aeaab9e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/fb050957-7fa0-4673-a160-c057d8b757cc.png?resizew=130)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1720da6d65e7fa854d98322d3864240.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
您最近一年使用:0次
2022-04-27更新
|
1691次组卷
|
3卷引用:山东省潍坊市2022届高三下学期二模数学试题
解题方法
5 . 在斜三角形△
中,
,
,
分别是内角
,
,
的对边,
.
(1)求角
;
(2)若点
为
的中点,
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/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/ba1e0ed7ead55d5f4523fb505d4eadd7.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64138cda96f69d205d877d788035557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44bd8ca938b929fe0dea5a904fe34aee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
名校
6 . 如图,在梯形
中,已知
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962872194023424/2963678258741248/STEM/9025129a-9975-403a-9ebe-caef56ab42bc.png?resizew=188)
(1)求
;
(2)求
的长;
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bdf4abf6b7288e23284dfed6830045b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a774802d0ebfb545c4acbde42f5a1f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab14057df4aa1ace6bb46c7f78fb934.png)
![](https://img.xkw.com/dksih/QBM/2022/4/21/2962872194023424/2963678258741248/STEM/9025129a-9975-403a-9ebe-caef56ab42bc.png?resizew=188)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/462a35893afcd7774f5183e738ad506c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次
2022-04-22更新
|
1338次组卷
|
7卷引用:江苏省金湖中学、洪泽中学等六校2021-2022学年高一下学期期中大联考数学试题
江苏省金湖中学、洪泽中学等六校2021-2022学年高一下学期期中大联考数学试题(已下线)专题03 玩转正余弦定理-2021-2022学年高一数学下学期期末必考题型归纳及过关测试(人教A版2019)余弦定理、正弦定理应用举例(已下线)微专题09 解三角形图形类问题(2)-【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)第11章:解三角形 重点题型复习-【题型分类归纳】2022-2023学年高一数学同步讲与练(苏教版2019必修第二册)辽宁省鞍山市普通高中2022-2023学年高一下学期六月联考数学(A卷)试题湖北省黄冈市黄梅县国际育才高级中学2022-2023学年高一下学期期中数学试题
名校
7 . 在平面四边形ABCD中,
,
,
,
,△BCD的面积为
.
(1)求
的值;
(2)求边BC的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4795ee1f96b430529934e2231b38885d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/908497b3549eeb1a53292301b76662a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26c79a46281b66f8c530f360a7e2609.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8baab87aaa703b3fe340e8fad36d4426.png)
(2)求边BC的长.
您最近一年使用:0次
2022-04-21更新
|
783次组卷
|
4卷引用:江苏省常州市2021-2022学年高一下学期期中数学试题
江苏省常州市2021-2022学年高一下学期期中数学试题广东省广州市第一中学2022-2023学年高一下学期期中数学试题江苏省扬州市广陵区红桥高级中学2022-2023学年高一下学期期中数学试题(已下线)复习专题04正、余弦定理(2) - 期末专项复习
8 . 在
中,内角A,B,C的对边分别为a,b,c,且
.
(1)求角A的大小;
(2)若D是
边上靠近B的三等分点,且
,
,判断
是否存在,若存在,求出
面积;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e9331a0aeb6be20548b99981a93c75.png)
(1)求角A的大小;
(2)若D是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fd64e4f9466e4642224aaf2d38b11b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,在圆内接四边形ABCD中,
,且
依次成等差数列.
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958094116044800/2959245912580096/STEM/b2a8bfa8-ab8e-443e-a6c8-b8cc353daef5.png?resizew=158)
(1)求边AC的长;
(2)求四边形ABCD周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b124087e8e0f003f15224ecc3c983228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e60676d73841a5ec66961e92e2b2646.png)
![](https://img.xkw.com/dksih/QBM/2022/4/14/2958094116044800/2959245912580096/STEM/b2a8bfa8-ab8e-443e-a6c8-b8cc353daef5.png?resizew=158)
(1)求边AC的长;
(2)求四边形ABCD周长的最大值.
您最近一年使用:0次
2022-04-16更新
|
1325次组卷
|
8卷引用:甘肃省2022届高三第二次高考诊断考试数学(理)试题
甘肃省2022届高三第二次高考诊断考试数学(理)试题甘肃省2022届高三第二次高考诊断考试数学(文)试题(已下线)临考押题卷06-2022年高考数学临考押题卷(新高考卷)(已下线)回归教材重难点02 三角函数与解三角形-【查漏补缺】2022年高考数学(文)三轮冲刺过关(已下线)3.6 三角函数的专题综合运用(精练)-【一隅三反】2023年高考数学一轮复习(基础版)(新高考地区专用)江西省景德镇一中2021-2022学年高一(18班)下学期期末考数学试题(已下线)5.4 正、余弦定理(精讲)-【一隅三反】2023年高考数学一轮复习(提升版)(新高考地区专用)福建省上杭县第一中学2023届高三上学期12月月考数学试题
解题方法
10 . 在
中,点
在
上,
平分
,已知
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
(1)求
的长;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b3bd7fcc7124307e9c33f98c53f2edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40560ea08d6cd8c1d4d9661ee6faaa3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fe532cad7a1f9279d58874aa4def00.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b01adc561735ff5be9bb97266918f2.png)
您最近一年使用:0次