legiabach20 legiabach20
  • 16-08-2021
  • Mathematics
contestada

cos a/4= -1/4
cos a= ??

Respuesta :

cungthienbinh12345 cungthienbinh12345
  • 16-08-2021

Answer:

cos a / 4 = -1/4

--->cos a =- 1          

         

                                                                 

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