[tex]\begin{bmatrix}{\square} & {\square} & {\square} \\ {\square} & {\square} & {\square} \\ {\square} & {\square} & {\square}\end{bmatrix}\lim _{n\to\infty}\cos ^{-1}\tan \ln _{10}\ln _{10}\tan ^{-1}\tan ^{-1}\ln \ln _{10}\ln _{10}10^{\square}\cos ^{-1}\tan ^{-1}\tan ^{-1}\tan \cos ^{-1}\cos ^{-1}\cos ^{-1}\cos \cos \cos \cos \cos \tan ^{-1}\tan ^{-1}\tan ^{-1}\tan ^{-1}\ln \ln \ln \ln \ln [/tex]
