The area of the triangle whose vertices are represented by the complex numbers $0, z,$ and $z{e^{i\alpha }}$ $(0 < \alpha < \pi )$ is equal to:

  • A
    $\frac{1}{2}|z|^2 \cos \alpha $
  • B
    $\frac{1}{2}|z|^2 \sin \alpha $
  • C
    $\frac{1}{2}|z|^2 \sin \alpha \cos \alpha $
  • D
    $\frac{1}{2}|z|^2$

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