Dadidadida: Why $\frac{1}{i} = -i$ ?

Why $\frac{1}{i} = -i$ ?

$\begin{aligned} \frac{1}{i} &= i^{-1} = e^{i\frac{-\pi}{2}} = -i \\ \end{aligned}$

# posted by rot13(Unafba Pune) @ 10:17 PM

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