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Find the inverse of each of the matrices (if it exists) given in $A=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & \cos \alpha & \sin \alpha \\ 0 & \sin \alpha & -\cos \alpha\end{array}\right]$
Find the inverse of each of the matrices (if it exists) given in $A=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & \cos \alpha & \sin \alpha \\ 0 & \sin \alpha & -\cos \alpha\end{array}\right]$
CBSE | Class 12 | Determinants | Exercise 4.5 | Maths | NCERT
Find the inverse of each of the matrices (if it exists) given in $A=\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & \cos \alpha & \sin \alpha \\ 0 & \sin \alpha & -\cos \alpha\end{array}\right]$

Let A = 

 

= 

  exists.

A11 = ,

A12 = , A13 = ,

A21 = ,   A22 = ,

A23 = ,  A31 = ,

A32 = , A33 = 

 adj. A = 

 

i

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