jarrett1336 jarrett1336
  • 19-07-2016
  • Mathematics
contestada

sin23cos27-cos23sin27

Respuesta :

princegn
princegn princegn
  • 19-07-2016
sin(A-B) = sinAcosB - cosAsinB
=sin23cos27- cos23sin27
= sin(23-27)
= sin(-4)
=-sin4
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