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If z=re^i theta then |e^(iz)| is equal t...

If `z=re^i theta` then `|e^(iz)|` is equal to:

A

`e^(-rsintheta)`

B

`re^(-rsintheta)`

C

`e^(-rcostheta)`

D

`re^(-rcostheta)`

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The correct Answer is:
A
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