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If z = re^(itheta), then prove that |e^(...

If `z = re^(itheta)`, then prove that `|e^(iz)| = e^(-r sin theta)`.

A

`e^(-rsin theta)`

B

`re^(-rsin theta)`

C

`e^(-rcos theta)`

D

`re^(-rcos theta)`

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The correct Answer is:
A
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