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Hannah_Ahn

  • 4 years ago

write as a single trig. fcn. cos2xcos3x - sin2xsin3x

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  1. sam_unleashed
    • 4 years ago
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    cos(a+b)=cos(a)cos(b) -sin(a)sin(b) so plug the values=cos(2x +3x)=cos(5x)

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