2023年3月贵州德余高速乌江特大桥主体贯通.如图,桥墩
边有一斜坡
,坡角为
,河岸
平行于水平线
长为
,点C到
的距离为
,在点D处测得桥墩最高点A的仰角为
,点A,B,C,D,M均在同一平面内.
(参考数据:
,
,
,
,
)
(1)求斜坡
的长;
(2)求桥墩
的高(结果精确到
).
![](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/76c12e76fbd84eeec721386bd3b04cc4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c64852eaf2b9c29561720c482c63f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9414ff28f19da32f3bcb1f0af4a63f95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7728c1b0692431c2ee9d4c08bbab5258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7451b9d94e28503b8ac931632ff9dbf.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc13b9701060c650c7c681a28a90a5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66b695eff1eceaf23fa694a871bcf8db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9276f5c80582d75a9731f68947c5d08f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a91fa163ba018df2dcf31e86f10180.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c114c8734f0d064de64d8457655a980c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/31/b7b619a3-0f4d-463e-9528-4e83a1a3c426.png?resizew=208)
(1)求斜坡
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)求桥墩
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa19eeaf415ed419e77fe92794f443.png)
2023·贵州贵阳·一模 查看更多[3]
更新时间:2023-05-28 12:11:56
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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