mehakbajaj34
mehakbajaj34
01-04-2017
Mathematics
contestada
[tex]cos(3theta) =-1
[/tex]
Respuesta :
ghanami
ghanami
01-04-2017
hello :
cos(3
θ) = -1
cos(3θ) = cos(
π)
general solution in : R is
3θ = (2k+1)π k in Z
θ = (2k+1)π/3
if θ in
[0 , 2
π] the solutions are :
k=0 : x = π/3
k=1 : x = π
k=2 : x = 5π/3
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