名校
解题方法
1 . 如图所示,
、
分别是椭圆
:
的左、右焦点,
为椭圆
上一动点,当点
在椭圆
的上顶点时,
且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/e04e8ccb-37f6-4d72-954c-472f648ece66.png?resizew=235)
(1)求椭圆
的标准方程;
(2)直线
与椭圆
的另一交点为
,过
作直线
的垂线
,
与圆
交于
、
两点,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a8de17bc319856fc4ee025fb3057659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/025e4998614103f80dc0fd35e5ffc80b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/e04e8ccb-37f6-4d72-954c-472f648ece66.png?resizew=235)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef74c4299221a967507c6a179337581a.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/e8d4ab45e8e8f0084d8d90a4c1233d86.png)
您最近一年使用:0次
2021-09-28更新
|
1153次组卷
|
4卷引用:黑龙江省哈尔滨市第六中学2021届高三第四次模拟数学(理)试题
黑龙江省哈尔滨市第六中学2021届高三第四次模拟数学(理)试题(已下线)一轮复习大题专练56—椭圆(面积最值问题1)—2022届高三数学一轮复习(已下线)9.6 三定问题及最值(精练)-【一隅三反】2022年高考数学一轮复习(新高考地区专用)四川省泸县第一中学2022-2023学年高二下学期期中理科数学试题
解题方法
2 . 已知
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f6f80dab894bf7499382e85cbaa78e.png)
您最近一年使用:0次
3 .
中,已知
求
的最大角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f56926b39696e3d82aa0043e5690601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
解题方法
4 . 在
中,A为定角且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b52bb0d7b70088abcd3c2c353bc0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879db306edf973f0787e1f576f0437bb.png)
您最近一年使用:0次
解题方法
5 . 设x、y、
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5d8c6fb307e1f2a9a2a67e2eac4a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf12f30c1d8945b3f5e20b4aaac6e090.png)
您最近一年使用:0次
名校
解题方法
6 . 依据《齐齐哈尔市城市总体规划(2011﹣2020)》,拟将我市建设成生态园林城、装备工业基地、绿色食品之都、历史文化名城.计划将图中四边形区域
建成生态园林城,
,
,
,
为主要道路(不考虑宽度).已知
,
,
km.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/93897682-35e5-4c04-bab6-289cf8d73a72.png?resizew=290)
(1)求道路
的长度;
(2)如图所示,要建立一个观测站
,并使得
,
,求
两地的最大距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a618e2fa885d453e050c21bc05f8fed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f4a098e98e74db40a5aa08eba09a46f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf82485cb0e2599485cee2072182e774.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/93897682-35e5-4c04-bab6-289cf8d73a72.png?resizew=290)
(1)求道路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)如图所示,要建立一个观测站
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46ed6a85478dd8e816f384eef31f3b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d045abc40b9acb8d6d1f4d80cb4655e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2021-09-15更新
|
1339次组卷
|
3卷引用:黑龙江省齐齐哈尔市2020-2021学年高一下学期期末数学试题
黑龙江省齐齐哈尔市2020-2021学年高一下学期期末数学试题(已下线)专题09 三角函数压轴题型汇总-2021-2022学年高一《新题速递·数学》(人教A版2019)四川省广元市苍溪县苍溪中学校2022-2023学年高一下学期期中数学试题
名校
7 . 为响应国家“乡村振兴”号召,农民王大伯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走地鸡,
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
,
,
,
.
时,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
;
(3)当
为何值时,鱼塘
的面积最小,最小面积是多少?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cee975a18902203254aa21d541c671f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f30bb9fbf908f410572cd8e1aea0b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/484539f82531c474c7b59925c3c188b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22df79bb3b4df1faf66c311ab80cafdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5cf48407af008db11eb4f236691d741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9752e1be78f9bbdb624c03f6a850ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
(2)若鱼塘
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f30bb9fbf908f410572cd8e1aea0b21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e520cef3cebf757a24737ffb661834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e856c15c61d7cb6ebd8daef542a4e7f.png)
您最近一年使用:0次
2021-09-14更新
|
2208次组卷
|
6卷引用:广东省广州市白云区、海珠区2020-2021学年高一下学期期末数学试题
名校
解题方法
8 . 如图,
,
是单位圆上的相异两定点(
为圆心),且
(
为锐角).点
为单位圆上的动点,线段
交线段
于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/4369fd3f-92cb-43c7-b83a-892972bb19dd.png?resizew=144)
(1)求
(结果用
表示);
(2)若
.
①是否存在点
,使得
?若存在,求出
的大小;若不存在,请说明理由;
②设
,且
,求函数
的值域.
![](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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7e00f8bacce4d649b535449f04568c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/4369fd3f-92cb-43c7-b83a-892972bb19dd.png?resizew=144)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9c604801ba1915e605db38c4140e0e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72bf0fce80daad394f2a9d013829c5c.png)
①是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce8f6dfb47f69eccf5375e045c5f8eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6159f5a25e5f7ed7a75d19e6aee9109f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32840bd4bf0d0eb6fc5e2b696ab05cd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2709ca478fb15ea08e8aa55328eae8e6.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,有一景区的平面图是一个半圆形,其中O为圆心,直径
的长为
,C,D两点在半圆弧上,且
,设
;
时,求四边形
的面积.
(2)若要在景区内铺设一条由线段
,
,
和
组成的观光道路,则当
为何值时,观光道路的总长l最长,并求出l的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26016c9a610be4da74086a37c3327d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a16dc02090b6e9263555061f14fbc8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813b1b0327154103afd7a728f00cfeda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5a52b8d415fcbf4f22187ecde4b41c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若要在景区内铺设一条由线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2021-09-06更新
|
5838次组卷
|
17卷引用:上海市实验学校2022届高三上学期摸底考试数学试题
上海市实验学校2022届高三上学期摸底考试数学试题(已下线)专题05 解三角形(实际问题)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)(已下线)第五章三角函数章末测试-【上好课】2021-2022学年高一数学同步备课系列(人教A版2019必修第一册)(已下线)专题09 三角函数压轴题型汇总-2021-2022学年高一《新题速递·数学》(人教A版2019)(已下线)课时20 三角函数的图像与性质-2022年高考数学一轮复习小题多维练(上海专用)上海市复兴高级中学2022届高三下学期3月检测数学试题(已下线)专题11 三角恒等与解三角形综合必刷大题100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)四川省成都市成都市树德中学2021-2022学年高一下学期4月月考数学试题辽宁省大连市第二十四中学2022届高考模拟考试(最后一模)数学试题四川省内江市内江市第六中学2022-2023学年高一下学期期中数学试题辽宁省本溪市第一中学2022-2023学年高一下学期期中考试数学试题四川省射洪中学2022-2023学年高一下学期5月月考数学试题(已下线)专题5.9 三角函数全章八类必考压轴题-举一反三系列江苏省苏州市苏州园三中2022-2023学年高一下学期5月月考数学试题(已下线)专题09 三角恒等变换、函数y=Asin(ωx+φ)及三角函数应用2-期末复习重难培优与单元检测(人教A版2019)专题06正弦定理、余弦定理解的实际应用上海市进才中学2023-2024学年高一下学期期中数学试题
名校
10 . 在非直角三角形
中,角
的对边分别为
.
(1)若
,且
,判断三角形
的形状;
(2)若
,
(i)证明:
;(可能运用的公式有
)
(ii)是否存在函数
,使得对于一切满足条件的m,代数式
恒为定值?若存在,请给出一个满足条件的
,并证明之;若不存在,请给出一个理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02746ec8e4220d8b4a174d5e9a711ed2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b1dd07c0571772e96d318f974724810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa949e59d152bdb7d77cd19ac79051f.png)
(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18c985cbe661f18eef831dcbc56f9cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/889623d5e61054f38a35aedd644c9ff5.png)
(ii)是否存在函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb4068ea539526f142b8d26dbb622be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4977f0df9fe38d488b5926b9d8c23c91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb4068ea539526f142b8d26dbb622be.png)
您最近一年使用:0次