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STATEMENT -1 : a=(1)/(3){:[(1,-2,2),(-2,...

STATEMENT -1 : `a=(1)/(3){:[(1,-2,2),(-2,1,2),(-2,-2,-1)]:}` is an orthogonal matrix
and
STATEMENT-2 : If A and B are otthogonal, then AB is also orthogonal.

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