Multiple Choice Questions on If A then what is AAT equal to Where AT is the transpose of A ........ for NDA Exam Preparation

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Multiple Choice Questions

If A then what is AAT equal to Where AT is the transpose of A ........

Mathematics (NDA) Matrices and Determinants
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    If  A =\begin{bmatrix} cos\alpha &sin\alpha \\ -sin\alpha & cos\alpha \end{bmatrix}  then what is AAT equal to(Where AT is the transpose of A)?

    Null matrix

    Incorrect Answer

    Identity matrix

    Correct Answer

    A

    Incorrect Answer

    -A

    Incorrect Answer
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