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Kennajo99 Kennajo99
  • 08-06-2016
  • Mathematics
Answered

Write the expression as the sine, cosine, or tangent of an angle.


sin 9x cos x - cos 9x sin x

Verified Answer :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 15-06-2016

sin 9x cos x - cos 9x sin x = sin(9x - x) = sin 8x

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