x10eholbrook x10eholbrook
  • 15-05-2020
  • Mathematics
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(3sqr3cis(pi/8))*(3sqr5cis(2pi/3))

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sqdancefan
sqdancefan sqdancefan
  • 16-05-2020

Answer:

  9√15·cis(19π/24)

Step-by-step explanation:

The magnitudes multiply and the angles add:

  = ((3√3)(3√5))·cis(π/8 +2π/3)

  = 9√15·cis(π(1/8 +2/3)) = 9√15·cis(π(3/24 +16/24))

  = 9√15·cis(19π/24)

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