If \[z\] is a purely real number such that \[\operatorname{Re}(z)

1.	If \[z\] is a purely real number such that \[\operatorname{Re}(z)
A.	\[\pi \]
B.	\[\frac{\pi }{2}\]
C.	0
D.	\[-\frac{\pi }{2}\]
Answer» B. \[\frac{\pi }{2}\]

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If \[z\] is a purely real number such that \[\operatorname{Re}(z)

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