在△ABC中,若(a2+b2)sin(A-B)=(a2-b2)sin C,则△ABC的形状是     

ABC中,若(a2b2)sin(AB)(a2b2)sin C,则ABC的形状是                                                                           (  )

A.锐角三角形                       B.直角三角形

C.等腰三角形                       D.等腰或直角三角形

答案

D

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