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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
.该船的行驶速度为________ 海里/小时;若该船不改变航行方向继续行驶,它________ 进入警戒水域(填“会”或“不会”).
![](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)
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2021-12-24更新
|
193次组卷
|
2卷引用:云南省昭通市市直中学2021-2022学年高二上学期第二次联考数学(文)试题
2 . 海洋蓝洞是地球罕见的自然地理现象,被喻为“地球留给人类保留宇宙秘密的最后遗产”,我国拥有世界上最深的海洋蓝洞.若要测量如图所示的蓝洞的口径
,
两点间的距离,现在珊瑚群岛上取两点
,
,测得
,
,
,
,则
两点的距离为______
,
两点的距离为______
.
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70d5fb7f3d8d7086b99968bcb42c5786.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/014062824c0e35a10ca775392ef5b8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f8efe422312295caedf5e31c4ce16a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac34466d49ce1fe5dd29d02f02e5cd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
![](https://img.xkw.com/dksih/QBM/2020/9/25/2557560010956800/2558637519486976/STEM/3be97fa0d0a3476192a9a385431a1467.png?resizew=446)
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3 . 如图,某货轮在A处看灯塔B在货轮的北偏东75°,距离为
n mile,在A处看灯塔C在货轮的北偏西30°,距离为
n mile,货轮由A处向正北航行到D处时,再看灯塔B在北偏东120°,则
(1)A处与D处之间的距离为______________ n mile;
(2)灯塔C与D处之间的距离为______________ n mile.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f52f128086257ab7513889dbf6c7550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6093eebca8f3ff82ce9298feb197e955.png)
(1)A处与D处之间的距离为
(2)灯塔C与D处之间的距离为
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/a6cb26d9-64f5-4812-afde-ffece958db56.png?resizew=163)
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