Question

Dado Z=3i;escreva a forma trigonométrica.
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Answer 1

p=√a²+b² = √0²+3² = 3

senx = b/p = 3/3= 1 ====> x=90° (π/2)

z= p.(cosx + i.senx)

z= 3.(cos π/2 + i.sen π/2) ✓