2011·黑龙江·三模
真题
名校
1 . 在一个特定时段内,以点
为中心的
海里以内海域被设为警戒水域.点
正北
海里处有一个雷达观测站
.某时刻测得一艘匀速直线行驶的船只位于点
北偏东
且与点
相距
海里的位置
,经过
分钟又测得该船已行驶到点
北偏东
(其中
,
)且与点
相距
海里的位置
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/825d7ff8-6cf1-4c1e-ba3d-02f8a4ca6e95.png?resizew=124)
(1)求该船的行驶速度(单位:海里/小时);
(2)若该船不改变航行方向继续行驶,判断它是否会进入警戒水域,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b06e95b57b7a81cd81d05557a11fa92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92128c6c226ce688bc160fb86854f2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05185a60d5d37c5af32ffea71066b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b72ac611ae66b86761e080761d9aabc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be0d63ca23fa30ee02490d12553f926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1e8fb910ead7ebfa8e116d500e3a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6a2dda4951d5607b0003a5586f33cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0833942748cb6a27fef897c5b8274d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/11/825d7ff8-6cf1-4c1e-ba3d-02f8a4ca6e95.png?resizew=124)
(1)求该船的行驶速度(单位:海里/小时);
(2)若该船不改变航行方向继续行驶,判断它是否会进入警戒水域,并说明理由.
您最近一年使用:0次
2022-07-15更新
|
559次组卷
|
19卷引用:2011届黑龙江省哈九中高三第三次模拟考试理科数学
(已下线)2011届黑龙江省哈九中高三第三次模拟考试理科数学(已下线)2012届海南省嘉积中学高三上学期教学质量监测考试理科数学(已下线)2012届甘肃省天水一中高三百题集理科数学试卷(四)(已下线)2013届广东东莞第七高级中学高三上学期第一次月考理科数学试卷上海市上海师范大学附中闵行分校2017-2018学年高三上学期第一次月考数学试题2017年上海市崇明区高考一模数学试题2008年普通高等学校招生考试数学(理)试题(湖南卷)(已下线)2012-2013学年安徽省淮北一中高二上学期期中考试数学试卷2016-2017年河南西平县高级中学高二文十月月考数学试卷江西省玉山县第一中学2016-2017学年高一(9-17班)下学期第一次考试数学(理)试题贵州省遵义市第四中学2017-2018学年高一下学期第一次月考数学试题江苏省常熟市王淦昌中学2019-2020学年高一下学期开学考试数学试题江苏省扬州市邗江中学2019-2020学年高一下学期期中数学试题江苏省苏州市常熟市海虞中学2019-2020学年高一下学期开学考试数学试题(已下线)考点16 解三角形实际应用问题 --2024届高考数学考点总动员【讲】(已下线)广东省广州市华南师范大学附属中学2021-2022学年高一下学期期中数学试题湖南师范大学附属中学2021-2022学年高一下学期第二次月考数学试题河南省信阳市信阳高级中学2021-2022学年高一下学期第四次月考数学试题广东省韶关市曲江区曲江中学2021-2022学年高一下学期期末复习2数学试题
名校
解题方法
2 . 已知a,b,c分别为
三个内角A,B,C的对边,
.
(1)求A;
(2)若
,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b11d83cc4abd3886788064b177a46c4.png)
(1)求A;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-11-19更新
|
768次组卷
|
6卷引用:2016届福建省师大附中高三上学期期中文科数学试卷
3 . 某小区拟将如图的一直角三角形
区域进行改建:在三边上各选一点连成等边三角形
,在其内建造文化景观.已知
,
,则
区域面积(单位:
)的最小值大约为______
.(保留到整数,参考数据:
;
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6a6006ff179a399fb0e9d126cb84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e4c3c0d6cd2958d69f7aeabb455603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3180e6cef57558978128081f259bd9fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/460317e7c26f95b9b29cfe1a89b796d6.png)
![](https://img.xkw.com/dksih/QBM/2020/12/24/2621216524484608/2623111896276992/STEM/6304195e-7f7c-4ae9-b827-55e5d6c34393.png)
您最近一年使用:0次
2020-12-27更新
|
339次组卷
|
2卷引用:辽宁省丹东市五校2020-2021学年高三上学期12月月考数学试题
名校
解题方法
4 . 某规划部门拟在一条河道附近建设一个如图所示的“创新产业园区”,已知整个可用建筑用地可抽象为
,其中折线
为河岸,经测量河岸拐弯处
,
千米,且
为等腰三角形.根据实际情况需要在该产业园区内再规划一个核心功能区
,其中M、N分别在
、
(不包括端点)上,P为
中点,且
,设
.
![](https://img.xkw.com/dksih/QBM/2020/11/18/2595175103086592/2599687431503872/STEM/f04103ce07da4470b4ccd1023c770e42.png?resizew=235)
(1)若
,求
的长度;
(2)求核心功能区
的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13c772461aef1d9d715129636739748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9673cb91a7efbc4abaa7124ab986bf1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d631d1d58f4b8007b9a57d6c77d6063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b05bf23fc23d66e05af9eb79a7a7d17.png)
![](https://img.xkw.com/dksih/QBM/2020/11/18/2595175103086592/2599687431503872/STEM/f04103ce07da4470b4ccd1023c770e42.png?resizew=235)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a6a1d319648bb969845a9159cdba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)求核心功能区
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
您最近一年使用:0次
2020-11-24更新
|
935次组卷
|
5卷引用:重庆市南开中学校2021届高三上学期第三次质量检测数学试题
重庆市南开中学校2021届高三上学期第三次质量检测数学试题(已下线)大题专项训练3:解三角形(面积的最值)-2021届高三数学二轮复习(已下线)第六章 解三角形专练6—取值范围、最值问题2(大题)-2022届高三数学一轮复习重庆市第一中学2020-2021学年高一下学期期末数学试题重庆市缙云教育联盟2021-2022学年高一下学期6月质量检测数学试题
名校
5 . 一经济作物示范园的平面图如图所示,半圆
的直径
,点
在
的延长线上,
,点
为半圆上异于
两点的一个动点,以点
为直角顶点作等腰直角
,且点
与圆心
分布在
的两侧,设
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/13/570f4461-d79f-4b5b-9cac-f328ab0fe9d9.png?resizew=189)
(1)把线段
的长表示为
的函数;
(2)现要在
和
内分别种植甲、乙两种经济作物. 这两种作物单位面积的收益比为
,求
为何值时,收益最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19692f3b7b3a02bf61abdafd5cb8c0e4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/13/570f4461-d79f-4b5b-9cac-f328ab0fe9d9.png?resizew=189)
(1)把线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1443bfe022f648f813fb1e15b2d78b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)现要在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9524e3810e06dc781285f1289e75d653.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ff51cfdf99a6f1000b0878a6588f5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2020-11-21更新
|
527次组卷
|
6卷引用:湖北省六校(恩施高中、郧阳中学、沙市中学、十堰一中、随州二中、襄阳三中)2020-2021学年高三上学期11月联考数学试题
解题方法
6 . 如图所示,滨江公园内有一块三角形形状的草坪
,经测量得
,在保护草坪的同时,为了方便游人行走,现打算铺设一条小路
(其中点
在边
上,点
在边
上),若
恰好将该草坪的面积平分,则
两点间的最小距离为_____
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6d0d95c53b0e9c9fdb74e2adfb0ed13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/9334c128-a726-407a-aa33-be24e5c94b89.png?resizew=102)
您最近一年使用:0次
2020-11-12更新
|
439次组卷
|
7卷引用:吉林省吉林市2021届高三上学期第一次调研考试 数学(理)试题
吉林省吉林市2021届高三上学期第一次调研考试 数学(理)试题吉林省吉林市2021届高三第一学期第一次调研考试 数学(文)试题(已下线)专题17 解三角形综合——2020年高考数学母题题源解密(山东、海南专版)吉林市普通高中2020-2021学年高三第一次调研测试(期中)数学(理)试题吉林市普通高中2021届高三第一次调研测试(期中)数学(文)试题河南省信阳市普通高中2022-2023学年高三第二次教学质量检测数学(文科)试题(已下线)第四章 三角函数与解三角形 第七节 解三角形应用举例(B素养提升卷)
7 . 如图,某校园内有一块圆形草坪,其内接
区域内种植花卉(阴影部分),已知
,
,
,现为了扩大花卉的种植面积,欲在弧
上找一点
,使得新的种植区域
的面积
(单位:
)最大,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9ddc780ee8fd096086c31f5fb0d260.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709762f6abfd11c7c2e51ea6a750aa00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810a2cc3f61a961c1196fbd0e11caabb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bb882b525043fb4602f598a9dfe5fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad3e2b2689dfe97ec82d473ab6cf469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba007666deb89951641bd1e24bc174a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://img.xkw.com/dksih/QBM/2020/10/29/2581343841959936/2588042365739008/STEM/f8c4005049e541f7b4ec526c3abe307b.png?resizew=112)
您最近一年使用:0次
名校
8 . 如图,一艘湖面清运船在
处发现位于它正西方向的
处和北偏东
方向上的
处分别有需要清扫的垃圾,红外线感应测量发现机器人到
的距离比到
的距离少40米,于是选择沿
路线清扫.已知清运船的直线行走速度为2米/秒,总共用了100秒钟完成了清扫任务(忽略清运船打捞垃圾及在
处转向所用时间).
![](https://img.xkw.com/dksih/QBM/2020/9/26/2557972408328192/2582750861819904/STEM/af7918cd743b4c47b4b65af24c1a4173.png?resizew=146)
(1)
、
两处垃圾的距离是多少?
(2)清运船此次清扫行走路线的夹角
是多少?(用反三角函数表示)
![](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/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/bfd66776565f049eb453c14fcaf79234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2020/9/26/2557972408328192/2582750861819904/STEM/af7918cd743b4c47b4b65af24c1a4173.png?resizew=146)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)清运船此次清扫行走路线的夹角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
您最近一年使用:0次
名校
解题方法
9 . 重庆、武汉、南京并称为三大“火炉”城市,而重庆比武汉、南京更厉害,堪称三大“火炉”之首.某人在歌乐山修建了一座避暑山庄
(如图).为吸引游客,准备在门前两条夹角为
(即
)的小路之间修建一处弓形花园,使之有着类似“冰淇淋”般的凉爽感,已知弓形花园的弦长
且点
,
落在小路上,记弓形花园的顶点为
,且
,设
.
,
用含有
的关系式表示出来;
(2)该山庄准备在
点处修建喷泉,为获取更好的观景视野,如何规划花园(即
,
长度),才使得喷泉
与山庄
距离即值
最大?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c5c26795dd1d7bd5cebaa980a594512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7d95b6bf37b18d4e11d4d1464244b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(2)该山庄准备在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c19fa4cd646f4d877c3e58cc346651.png)
您最近一年使用:0次
2020-10-15更新
|
631次组卷
|
8卷引用:重庆市第一中学2021届高三上学期第一次月考数学试题
2020高三·全国·专题练习
10 . 如图,一条河的两岸平行,河的宽度![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d2a21e4be0a424cef459e1b8dd253b.png)
,一艘客船从码头
出发匀速驶往河对岸的码头
.已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
,水流速度为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
,若客船从码头
驶到码头
所用的最短时间为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
,则客船在静水中的速度大小为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/e5bc2f1a-6e6c-4eee-a345-e4b153db298a.png?resizew=200)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d2a21e4be0a424cef459e1b8dd253b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.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/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ce89b633e5d6bcf9406e3f9208fe06d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe20ba65a5a470ca5886b99ff4bcc8e1.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/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508e013a8978e0e67bf1f2bad60a8596.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/2/e5bc2f1a-6e6c-4eee-a345-e4b153db298a.png?resizew=200)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次