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已知△ABC的三个内角A,B,C,满足sinC=.
(1)判断△ABC的形状;
(2)设三边a,b,c成等差数列且S△ABC=6cm2,求△ABC三边的长
已知△ABC的三个内角A,B,C,满足.
(2)设三边a,b,c成等差数列且S△ABC=6 cm2,求△ABC三边的长.