# Let 1 , 1 0 é ù = Î ê ú ë û R x A x and A 4 = [aij]. If a11 = 109, then a22 is equal to _

Question:

Let $A=\left[\begin{array}{ll}x & 1 \\ 1 & 0\end{array}\right], x \in \mathbf{R}$ and $A^{4}=\left[a_{i j}\right]$. If $a_{11}=109$, then $a_{22}$ is equal to

JEE Main Previous Year 2 Question of JEE Main from Mathematics Inverse Trigonometric Functions chapter.
JEE Main Previous Year Sep. 03, 2020 (I)

Solution:

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