isidorocollazo
isidorocollazo
18-03-2017
Mathematics
contestada
given that cos a= 1/3 find cos 2a
Respuesta :
Аноним
Аноним
18-03-2017
cos a=1/3
cos 2a=1/3x2
cos 2a=2/3
That's your answer?..
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