一道数学题···(貌似是简单 但是我不会)在△ABC中,∠ACB=90°,CD是AB边上的高,AC=20cm,BC=15cm(1)求AC/BC(2)求AB,CD,AC,BD的长(3)求AD/BD,并说明AD/BD与AC/BC的关系
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![一道数学题···(貌似是简单 但是我不会)在△ABC中,∠ACB=90°,CD是AB边上的高,AC=20cm,BC=15cm(1)求AC/BC(2)求AB,CD,AC,BD的长(3)求AD/BD,并说明AD/BD与AC/BC的关系](/uploads/image/z/7213013-53-3.jpg?t=%E4%B8%80%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%C2%B7%C2%B7%C2%B7%EF%BC%88%E8%B2%8C%E4%BC%BC%E6%98%AF%E7%AE%80%E5%8D%95+%E4%BD%86%E6%98%AF%E6%88%91%E4%B8%8D%E4%BC%9A%EF%BC%89%E5%9C%A8%E2%96%B3ABC%E4%B8%AD%2C%E2%88%A0ACB%3D90%C2%B0%2CCD%E6%98%AFAB%E8%BE%B9%E4%B8%8A%E7%9A%84%E9%AB%98%2CAC%3D20cm%2CBC%3D15cm%EF%BC%881%EF%BC%89%E6%B1%82AC%2FBC%EF%BC%882%EF%BC%89%E6%B1%82AB%2CCD%2CAC%2CBD%E7%9A%84%E9%95%BF%EF%BC%883%EF%BC%89%E6%B1%82AD%2FBD%2C%E5%B9%B6%E8%AF%B4%E6%98%8EAD%2FBD%E4%B8%8EAC%2FBC%E7%9A%84%E5%85%B3%E7%B3%BB)
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