KingMaese9
KingMaese9
27-06-2017
Mathematics
contestada
5sin(x+tan^-1(4/3))=3sinx+4cosx. proof?
Respuesta :
August007
August007
27-06-2017
5sin(x+tan^-1(4/3))=5sinx*cos(tan^-1(4/3))+5cosx*sin(tan^-1(4/3))
=5sinx*(3/5)+5cosx*(4/5)
=3sinx+4cosx
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