名校
解题方法
1 . 如图,点
在点
的正东方向,现有一个圆形音乐喷泉,点
为喷泉中心,用无人机于点
正上空的点
处,测得点
的俯角为
,点
的俯角为
,
四点共线,
均在圆
上,且
.已知圆
的面积为
平方米,且
米.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/601a4198-31a3-4d73-bf6b-1ebb23b96fca.png?resizew=168)
(1)求无人机的飞行高度;
(2)如图,现以
三点为顶点在音乐喷泉内建造三条排水暗渠,已知暗渠造价为
元/米,且建造暗渠的预算资金为
元.若要求
,
,
成等差数列,试问完成三条排水暗渠的建造是否有可能会超预算?说明你的理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afeb6bc44c5825a3591dbe5ce1c34faa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dffe6e4b89baac0ee6ce15bddc7de263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66f477764ed77c5611a30f030481aad6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dfa65d39fadff97647e4b11ff1abadd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/601a4198-31a3-4d73-bf6b-1ebb23b96fca.png?resizew=168)
(1)求无人机的飞行高度;
(2)如图,现以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3c6fe9427e64e9be83f2f5c01ceea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadc63e6e33743ce590ed968948a5a58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca9545636580553121fe1d366c079bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7098c45594103b46e6b57cfc6023e93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/358c69b4f6c350c35d19d33c69f2a2a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5567eab2f0af611b817cd26a56796cb.png)
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2021-10-12更新
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490次组卷
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4卷引用:河北省邢台市“五岳联盟”2022届高三上学期10月联考数学试题