ellyng10
ellyng10 ellyng10
  • 02-01-2020
  • Mathematics
contestada

Rewrite with only sin x and cos x.

cos 3x

Respuesta :

GrandNecro
GrandNecro GrandNecro
  • 02-01-2020

Answer:

cos(3x) --> cos³(x) - 3sin²(x)cos(x)

Step-by-step explanation:

The text in pink are the trig identities I used to convert cos(2x) and sin(2x) into their other equivalent forms.

This question is pretty much asking if you know how to use your trig identities if i understand it correctly.

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