abbygarcia12
abbygarcia12 abbygarcia12
  • 21-05-2020
  • Mathematics
contestada

Prove cos (x - n) = -cOS X.
cos (x - 7) = cos x sin n - sin x cos n = -cos X
cos (x - n) = cos x cos n - sin x sin n = -cos X
cos (x - n = cos x sinn + sin x cos n = -cos X
cos (x - n) = cos x cos n + sin x sin n = -cos x

Respuesta :

mdcrgaming mdcrgaming
  • 21-05-2020

Answer:

Answer B

Step-by-step explanation:

cos n + x =cos x + y  

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