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If A is an orthogonal matrix , then |A| is
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a
1
b
-1
c
±1
d
0
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Correct option is C
A is an orthogonal matrix ⇒A′A=AA′=In⇒A′A=AA′=In⇒A′∥A=1⇒|A||A|=1⇒A2=1⇒|A|=±1Similar Questions
If is a matrix satisfying the equation then
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