Find the inverse of each of the matrices (if it exists) given in $A=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & \cos \alpha & \sin \alpha \\ 0 & \sin \alpha & -\cos \alpha\end{array}\right]$ 3 years ago Let A = = exists. A11 = , A12 = , A13 = , A21 = , A22 = , A23 = , A31 = , A32 = , A33 = adj. A =