名校
解题方法
1 . 为响应国家“乡村振兴”号召,农民老王拟将自家一块直角三角形地按如图规划成3个功能区:
区域为荔枝林和放养鸡地,
区域规划为“民宿”供游客住宿及餐饮,
区域规划为小型鱼塘养鱼供休闲垂钓.为安全起见,在鱼塘
周围筑起护栏.已知
m,
m,
,
﹒
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864592864468992/2871145337937920/STEM/e7f4729cdb704b9bab17ff84d596753b.png?resizew=204)
(1)若
m,求护栏的长度(
的周长);
(2)若鱼塘
的面积是“民宿”
的面积的
倍,求AM的长;
(3)鱼塘
的面积是否有最小值?若有,请求出其最小值;若没有,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc6b3677491528dfd3366e9c20f9516e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487a0211f88694a94555630c62538a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc5f84a8290ab5964c1578d0c3df186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc5f84a8290ab5964c1578d0c3df186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe9cd4d26b36232d4063a583691ef13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e4813b39858cda0fb82c954f88969a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0653ca05309f7e7529e1f16a68d17fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607a009b69c374237883632a2a76d3b8.png)
![](https://img.xkw.com/dksih/QBM/2021/12/3/2864592864468992/2871145337937920/STEM/e7f4729cdb704b9bab17ff84d596753b.png?resizew=204)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a650972edfbb7cdfe57a9369c0fb05e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc5f84a8290ab5964c1578d0c3df186.png)
(2)若鱼塘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc5f84a8290ab5964c1578d0c3df186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/487a0211f88694a94555630c62538a19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3f8c3ba00c59e0634ed10fa85289de.png)
(3)鱼塘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dc5f84a8290ab5964c1578d0c3df186.png)
您最近一年使用:0次
2021-12-12更新
|
858次组卷
|
2卷引用:云南省玉溪第一中学2021-2022学年高二上学期期中考试数学(理)试题
名校
解题方法
2 . 若
的面积为
,且角C为钝角,则:
(1)求
;
(2)求
的取值范围;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2399f71125b424fd17c5da2ae796e5ce.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
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2021-09-14更新
|
713次组卷
|
2卷引用:云南省昆明市第三中学2021-2022学年高二上学期期中考试数学试题
解题方法
3 . 已知在
中,内角A,B,C所对的边分别为a,b,c,且
.
(1)求角A的值;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389399defa1f7876fe799d029d70779.png)
(1)求角A的值;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2402bd917cd80ec17c0d634185057869.png)
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名校
4 . 如图,在
中,
,
为线段
上的点,且
,
.
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699089791737856/2807088135569408/STEM/6a9cad67-513b-4659-aec1-79347db3dc10.png?resizew=272)
(1)求
的长;
(2)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96c5e7ab5a46dd74168a6555fd6bf6b6.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/ee9cb86860f80895d03974a37bf760a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cac7036aa06c1d8c224f4a90647d4d3d.png)
![](https://img.xkw.com/dksih/QBM/2021/4/13/2699089791737856/2807088135569408/STEM/6a9cad67-513b-4659-aec1-79347db3dc10.png?resizew=272)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-09-13更新
|
454次组卷
|
3卷引用:云南省南涧县第一中学2020-2021学年高一4月月考数学试题
名校
解题方法
5 . 在△ABC中,角A,B,C所对的边分别为a,b,c,它的面积为S且满足
.
(1)求角B的大小;
(2)若△ABC为锐角三角形,且
,求△ABC面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/388596c09d39b4658d5661761055f393.png)
(1)求角B的大小;
(2)若△ABC为锐角三角形,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
您最近一年使用:0次
2021-09-05更新
|
605次组卷
|
3卷引用:云南省曲靖市罗平县第二中学2020-2021学年高一6月月考数学试题
6 . 如图,在四边形ABCD中,AB∥CD,AB=2
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/b7387268-3277-4363-aa54-7e746300f004.png?resizew=177)
(1)求
;
(2)求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35361e76a7c85d1886728c8d0200b234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a272e71fe2e505254344c7e8260bf3cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b326dc38d92806c8911b9f9e1a3f323e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebf90c8e6c7249c409d56e2a6ece5b16.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/b7387268-3277-4363-aa54-7e746300f004.png?resizew=177)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7385a7caee96f0030f1760f70e1150e4.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
名校
7 . 如图,在圆O的内接四边形
中,
,记
的面积为
,
的面积为
,
.
,求
的值;
(2)若
,求
的最大值;
(3)若
,求
的最大值,并写出此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51bee22a9f0ee9cbaf286d2e958d61d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ce705d3a2fe04d29de9e81ec6250d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/465f5592121f67230f0d56097d6c0288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21cbb1c2bcbcb8391ac5a879f2ae0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97cf714ffb3fd5917a76b191640b55fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de8cc58ef27567f0ab06eb1012aec330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38c43d922840f5f7693007beeb62b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
2021-09-02更新
|
1803次组卷
|
6卷引用:云南省文山州广南县第一中学校2024届高三上学期第一次省统测数学模拟试题
云南省文山州广南县第一中学校2024届高三上学期第一次省统测数学模拟试题江苏省连云港市东海县2020-2021学年高一下学期期中数学试题江苏省苏州外国语学校2021-2022学年高一下学期期中数学试题(已下线)高一下学期期中复习解答题压轴题十八大题型专练(1)-举一反三系列(人教A版2019必修第二册)福建省南安市侨光中学2023-2024学年高一下学期第1次阶段考试(4月)数学试题(已下线)解三角形-综合测试卷A卷
解题方法
8 . 已知△
是边长为8的等边三角形,点
在
边上(异于
,
).
(1)若线段
长度为整数,求
;
(2)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)若线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c5b3b7292d63db808a24ba871fc734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cf2d39a965604b748811d9dff1cfdb8.png)
您最近一年使用:0次
名校
解题方法
9 . 已知
中,
.
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718256617422848/2771099329765376/STEM/de790312b1124a32a42e59f94233f200.png?resizew=335)
(I)求B的大小;
(II)已知
,
,若D、E是边BC上的点,使
,求当△ADE面积的最小时,∠BAD的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4083d32aab1e970ed785fb157e368eb.png)
![](https://img.xkw.com/dksih/QBM/2021/5/10/2718256617422848/2771099329765376/STEM/de790312b1124a32a42e59f94233f200.png?resizew=335)
(I)求B的大小;
(II)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e38f550e95b2950f91e8ec1798b94109.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d52c4612c289ce6e84aa4635de75f6a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a6f7ba4bc6ca4347340f44fbb55b3ef.png)
您最近一年使用:0次
2021-07-24更新
|
693次组卷
|
3卷引用:云南省文山州第一中学2020-2021学年高一6月月考数学试题
云南省文山州第一中学2020-2021学年高一6月月考数学试题北京市第五中学2020-2021学年高一下学期期中考试数学试题(已下线)一轮大题专练18—解三角形(面积问题1)-2022届高三数学一轮复习
名校
解题方法
10 . 已知
,
,
分别为
的三个内角
,
,
的对边,且
.
(1)求
;
(2)从以下三个条件:①
;②
的面积为
;③
中选一个作为已知条件,求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7503a5cf856578dfb5547d87db2aa3a7.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)
![](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/4ec647d92c9a0f1d600af74ab0cc7cc0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)从以下三个条件:①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf1461b4ffa934b82554c87a5d967bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次