Which of the following is/are correct? If A is orthogonal matrix, then A is non singular...

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Which of the following is/are correct? If A is orthogonal matrix, then A is non singular and A™¹ = A¹ If A is orthogonal matrix, then |4| = ±1 Transpose of an orthogonal matrix is orthogonal None of the above Which of the following is/are correct? If A is orthogonal matrix, then A is non singular and A™¹ = A¹ If A is orthogonal matrix, then |4| = ±1 Transpose of an orthogonal matrix is orthogonal None of the above