已知三角ABC内角A.B.C所对边的长分别是a.b.c,且点(a sinA,csinC)在直线x-y=(a-b)sinB上(1)求角C的大小(2)若2cos平方2分之A-2sin平方2分之B=2分之根号3,且A
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![已知三角ABC内角A.B.C所对边的长分别是a.b.c,且点(a sinA,csinC)在直线x-y=(a-b)sinB上(1)求角C的大小(2)若2cos平方2分之A-2sin平方2分之B=2分之根号3,且A](/uploads/image/z/1658386-10-6.jpg?t=%E5%B7%B2%E7%9F%A5%E4%B8%89%E8%A7%92ABC%E5%86%85%E8%A7%92A.B.C%E6%89%80%E5%AF%B9%E8%BE%B9%E7%9A%84%E9%95%BF%E5%88%86%E5%88%AB%E6%98%AFa.b.c%2C%E4%B8%94%E7%82%B9%28a+sinA%2CcsinC%29%E5%9C%A8%E7%9B%B4%E7%BA%BFx-y%3D%28a-b%29sinB%E4%B8%8A%281%29%E6%B1%82%E8%A7%92C%E7%9A%84%E5%A4%A7%E5%B0%8F%282%29%E8%8B%A52cos%E5%B9%B3%E6%96%B92%E5%88%86%E4%B9%8BA-2sin%E5%B9%B3%E6%96%B92%E5%88%86%E4%B9%8BB%3D2%E5%88%86%E4%B9%8B%E6%A0%B9%E5%8F%B73%2C%E4%B8%94A)
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