如图,在湖面上高为10 m处测得天空中一朵云的仰角为
,测得湖中之影的俯角为45°,则云距湖面的高度为__________ (精确到0.1 m).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
2024高三下·全国·专题练习 查看更多[2]
更新时间:2024-06-06 14:42:20
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【推荐1】如图的曲线就像横放的葫芦的轴截面的边缘线,我们叫葫芦曲线(也像湖面上高低起伏的小岛在水中的倒影与自身形成的图形,也可以形象地称它为倒影曲线),它对应的方程为
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【推荐2】某地一天0~24时的气温y(单位:℃)与时间t(单位:h)的关系满足函数
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【推荐1】龙文塔位于漳州市龙文区步文镇鹤鸣山,是漳州古城的标志性建筑,某研究性学习小组想利用正弦定理测量龙文塔的高度,他们在塔底
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【推荐2】某教师组织本班学生开展课外实地测量活动,如图是要测山高MN.现选择点A和另一座山顶点C作为测量观测点,从A测得点M的仰角
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