Find the unit vector perpendicular to both vectors $\vec{a}$ and $\vec{b}$.

  • A
    $\vec{a} \times \vec{b}$
  • B
    $\frac{\vec{a} \times \vec{b}}{\vec{a} \cdot \vec{b}}$
  • C
    $\frac{\vec{a} \times \vec{b}}{|\vec{a} \times \vec{b}|}$
  • D
    $\frac{\vec{a} \cdot \vec{b}}{|\vec{a}| |\vec{b}|}$

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