If \( n^{\text {th }} \)-order square matrix \( A \) is a orthogonal, then
\( |\operatorname{adj.... VIDEO
If \( n^{\text {th }} \)-order square matrix \( A \) is a orthogonal, then
P
\( |\operatorname{adj}(\operatorname{adj} A)| \) is
(1) Always -1 if \( n \) is even
(2) Always 1 if \( n \) is odd
(3) Always 1
(4) None of these
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