kcsiddell
kcsiddell
12-11-2016
Mathematics
contestada
Cos theta -2sin theta cos theta =0
Respuesta :
mreijepatmat
mreijepatmat
28-05-2017
cos(Ф) - 2sin(Ф).cos(Ф) =0
Factorize--> cos(Ф)[ 1-2sin(Ф)] =0
a) cos(Ф) = 0 ==> Ф= 0 or (0+2kπ)
b) 1-2sin(Ф) =0 ==> -2sin(Ф) = - 1 ==> sin(Ф) =1/2 Or
sin(Ф) = 1/2 ==> Ф =π/3 OR π/3 + (k+1)π/3
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