A driven half$-$wave dipole and a parasitic half$-$wave dipole is separated by a distance $0\mathrm{.}71$

$($where X $21=0).$ If the feed point current at the driven is $1$A$,$ find:

$($a$)$ The amplitude and phase of the current at the center of the parasitic dipole I$2(0)($the

phase of the feed point current is zero$)$

$($b$)$ The power radiated, assumed the conductors are perfect $($zero resistance$)$