Kennajo99 Kennajo99

08-06-2016
Mathematics

contestada

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

sin 9x cos x - cos 9x sin x

Respuesta :

nobillionaireNobley nobillionaireNobley

15-06-2016

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

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