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热气球的探测器显示,从热气球看一栋高楼顶部的仰角为30°,看这栋高楼底部的俯角为60°,热气球与高楼的水平距离为66m,这栋高楼有多高?(结果精确到0.1m,参考数据:≈1.73)
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教案备课库《八(1)数学组解直角三角形复习作业解直角三角形》真题及答案
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