在三角形ABC中,a、b、c分别是角A、B、C的对边,且(a+c)/(a+b)=(b-a)/c (1).求角B的大小(2)若三角形ABC最大边的边长为根号7,且sinC=2sinA,求最小边长2.已知实数a
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![在三角形ABC中,a、b、c分别是角A、B、C的对边,且(a+c)/(a+b)=(b-a)/c (1).求角B的大小(2)若三角形ABC最大边的边长为根号7,且sinC=2sinA,求最小边长2.已知实数a](/uploads/image/z/90163-19-3.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2Ca%E3%80%81b%E3%80%81c%E5%88%86%E5%88%AB%E6%98%AF%E8%A7%92A%E3%80%81B%E3%80%81C%E7%9A%84%E5%AF%B9%E8%BE%B9%2C%E4%B8%94%28a%2Bc%29%2F%28a%2Bb%29%3D%28b-a%29%2Fc+%EF%BC%881%EF%BC%89.%E6%B1%82%E8%A7%92B%E7%9A%84%E5%A4%A7%E5%B0%8F%EF%BC%882%EF%BC%89%E8%8B%A5%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E6%9C%80%E5%A4%A7%E8%BE%B9%E7%9A%84%E8%BE%B9%E9%95%BF%E4%B8%BA%E6%A0%B9%E5%8F%B77%2C%E4%B8%94sinC%3D2sinA%2C%E6%B1%82%E6%9C%80%E5%B0%8F%E8%BE%B9%E9%95%BF2.%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0a)
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