harriskori
harriskori harriskori
  • 22-03-2017
  • Mathematics
contestada

find an identity for cos(4t) in terms of cos(t)

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LammettHash
LammettHash LammettHash
  • 22-03-2017
[tex]\cos4t=\cos2(2t)=2\cos^22t-1[/tex]
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ghanami
ghanami ghanami
  • 22-03-2017
Hello here is a solution :
Ver imagen ghanami
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