If $A=\left[\begin{array}{cc}\cos heta & \sin heta \ -\sin heta & \cos heta\end{array} ight]$ and $A^3=\left[\begin{array}{cc}\cos 3 heta & m \ n & \cos 3 heta\end{array} ight]$, the values of $m$ and $n$ respectively are

Question

If $A=\left[\begin{array}{cc}\cos 	heta & \sin 	heta \ -\sin 	heta & \cos 	heta\end{array}ight]$ and $A^3=\left[\begin{array}{cc}\cos 3 	heta & m \ n & \cos 3 	heta\end{array}ight]$, the values of $m$ and $n$ respectively are

Aicharya · Accepted Answer

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If $A=\left[\begin{array}{cc}\cos \theta & \sin \theta \\ -\sin \theta & \cos \theta\end{array}\right]$ and…

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