Single correct · +4 / −1

The polar form of z = -1 + i is:

  1. (a) √2 (cos(3π/4) + i sin(3π/4))
  2. (b) √2 (cos(π/4) + i sin(π/4))
  3. (c) 2 (cos(π/4) + i sin(π/4))
  4. (d) √2 (cos(π/3) + i sin(π/3))
Answer and solution

Answer (a) √2 (cos(3π/4) + i sin(3π/4))

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