The real part of \[{{(1-i)}^{-i}}\]is [RPET 1999]

1.	The real part of \[{{(1-i)}^{-i}}\]is [RPET 1999]
A.	\[{{e}^{-\pi /4}}\cos \left( \frac{1}{2}\log 2 \right)\]
B.	\[-{{e}^{-\pi /4}}\sin \left( \frac{1}{2}\log 2 \right)\]
C.	\[{{e}^{\pi /4}}\cos \left( \frac{1}{2}\log 2 \right)\]
D.	\[{{e}^{-\pi /4}}\sin \left( \frac{1}{2}\log 2 \right)\]
Answer» B. \[-{{e}^{-\pi /4}}\sin \left( \frac{1}{2}\log 2 \right)\]

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The real part of \[{{(1-i)}^{-i}}\]is [RPET 1999]

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