ComedkMatrices And DeterminantsCOMEDK 2025 Morning ShiftMCQ+1 / -02025If $A(t)=\left[\begin{array}{cc}\cos t & \sin t \\ -\sin t & \cos t\end{array}\right]$ then the product of $A(t)$ and $A(-t)$ isA Identity matrixB $A^2(t)$C Null matrixD $A^2(-t)$Check AnswerClear SelectionReveal AnswerShow Explanation
