$
\mathop{\mathbf{lim}}\limits_{{\mathbf{x}}\mathbf{\rightarrow}{\mathbf{0}}}{\left[{\frac{\mathbf{x}}{\mathrm{\left({{\mathbf{e}}^{\mathbf{x}}\mathbf{{-}}{\mathbf{1}}}\right)}{\mathbf{cos}}\sqrt{\mathbf{x}}}}\right]}^{\frac{\mathbf{1}}{{\left({\mathbf{sin}\mathbf{x}}\right)}^{\mathbf{2}}}}
$
