lamasangye789 lamasangye789
  • 09-08-2021
  • Mathematics
contestada

how prove the following
cos²(120°-A) + cos²A + cos²(120°+A)= 3/2
​

Respuesta :

jasongggg
jasongggg jasongggg
  • 09-08-2021

Answer:

Sorry if it is not clear enough

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