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A square matrix A with elements form the...

A square matrix A with elements form the set of real
numbers is said to be orthogonal if `A' = A^(-1).` If A is an
orthogonal matris, then

A

A' is orthogonal

B

`A^(-1)` is orthogonal

C

Adj A = A'

D

`|A^(-1)|=1`

Text Solution

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The correct Answer is:
A, B
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