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Quadrilaterals

If A is an or...

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If A is an orthogonal .matrix then what is the value of det A

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A

is an orthogonal matrix , then value of

| A |

Q. If the orthogonal square matrix A and B satisfy, det A + det B = 0, then the value of det(A+B) =

A

3

\times

3

matrix, then what will be the value of

d e t (a d j A)

d e t (A) = 7

Q. Assertion :Every orthogonal matrix is invertible. Reason: If A is an orthogonal matrix then AA' is an identity matrix.

A

3 \times 3

invertible matrix, then what will be the value of

k

d e t (A^{- 1}) = (d e t A)^{k}

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