(2007•巴中)如图所示,某学校拟建两幢平行的教学楼,现设计两楼相距30米,从A点看C点,仰角为5°从A点看D点,俯角为30°,(1)求两幢楼分别高多少米?(结果精确到1米)(2)若冬日上午9:00
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![(2007•巴中)如图所示,某学校拟建两幢平行的教学楼,现设计两楼相距30米,从A点看C点,仰角为5°从A点看D点,俯角为30°,(1)求两幢楼分别高多少米?(结果精确到1米)(2)若冬日上午9:00](/uploads/image/z/13429780-52-0.jpg?t=%EF%BC%882007%26%238226%3B%E5%B7%B4%E4%B8%AD%EF%BC%89%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E6%9F%90%E5%AD%A6%E6%A0%A1%E6%8B%9F%E5%BB%BA%E4%B8%A4%E5%B9%A2%E5%B9%B3%E8%A1%8C%E7%9A%84%E6%95%99%E5%AD%A6%E6%A5%BC%2C%E7%8E%B0%E8%AE%BE%E8%AE%A1%E4%B8%A4%E6%A5%BC%E7%9B%B8%E8%B7%9D30%E7%B1%B3%2C%E4%BB%8EA%E7%82%B9%E7%9C%8BC%E7%82%B9%2C%E4%BB%B0%E8%A7%92%E4%B8%BA5%C2%B0%E4%BB%8EA%E7%82%B9%E7%9C%8BD%E7%82%B9%2C%E4%BF%AF%E8%A7%92%E4%B8%BA30%C2%B0%2C%EF%BC%881%EF%BC%89%E6%B1%82%E4%B8%A4%E5%B9%A2%E6%A5%BC%E5%88%86%E5%88%AB%E9%AB%98%E5%A4%9A%E5%B0%91%E7%B1%B3%3F%EF%BC%88%E7%BB%93%E6%9E%9C%E7%B2%BE%E7%A1%AE%E5%88%B01%E7%B1%B3%EF%BC%89%EF%BC%882%EF%BC%89%E8%8B%A5%E5%86%AC%E6%97%A5%E4%B8%8A%E5%8D%889%EF%BC%9A00)
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