For a matrix [M] = , the transpose of the matrix is equal

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For a matrix [M] =

, the transpose of the matrix is equal to the inverse of the matrix,[M]T = [M]–1. The value of x is given by

1. - 4
  5
2. - 3
  5
3. 3
  5
4. 4
  5

Correct Option: A

A^T = A^-1
so, orthogonal matrix
Now AA^-1 = I = AA^T