問題詳情
某人隔河測一山高，在A點觀測山時，山的方位為東偏北60度，山頂的仰角為60度，某人自A點向東行600公尺到達B點，山的方位變成在西偏北30度，則山有多高？ 
參考答案
答案：B
難度：簡單0.725664
統計：A(7),B(82),C(9),D(15),E(0)
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