在三角形ABC中,a,b,c分别为角A,B,C的对边.若C=π/3,c=7/2,三角形的面积S=在三角形ABC中,a,b,c分别为角A,B,C的对边.(1)若C=π/3,c=7/2.三角形的面积S=(3√3)/2.求a,b的值;(2)若A,B,C成等差数列,且cos(A/2-C/2
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![在三角形ABC中,a,b,c分别为角A,B,C的对边.若C=π/3,c=7/2,三角形的面积S=在三角形ABC中,a,b,c分别为角A,B,C的对边.(1)若C=π/3,c=7/2.三角形的面积S=(3√3)/2.求a,b的值;(2)若A,B,C成等差数列,且cos(A/2-C/2](/uploads/image/z/1809854-62-4.jpg?t=%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2Ca%2Cb%2Cc%E5%88%86%E5%88%AB%E4%B8%BA%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9.%E8%8B%A5C%3D%CF%80%2F3%2Cc%3D7%2F2%2C%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AFS%3D%E5%9C%A8%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%AD%2Ca%2Cb%2Cc%E5%88%86%E5%88%AB%E4%B8%BA%E8%A7%92A%2CB%2CC%E7%9A%84%E5%AF%B9%E8%BE%B9.%281%29%E8%8B%A5C%3D%CF%80%2F3%2Cc%3D7%2F2.%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E9%9D%A2%E7%A7%AFS%3D%283%E2%88%9A3%29%2F2.%E6%B1%82a%2Cb%E7%9A%84%E5%80%BC%EF%BC%9B%EF%BC%882%EF%BC%89%E8%8B%A5A%2CB%2CC%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E4%B8%94cos%EF%BC%88A%2F2-C%2F2)
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