Tenemos la indeterminación de tipo
0/0,
tal que el límite para el numerador es
$$\lim_{x \to 0^+} \cot^{\sin{\left(x \right)} - 1}{\left(x \right)} = 0$$
y el límite para el denominador es
$$\lim_{x \to 0^+} \frac{1}{\left(- \cot^{2}{\left(x \right)} - 1\right) \sin{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} \cot{\left(x \right)}} = 0$$
Vamos a probar las derivadas del numerador y denominador hasta eliminar la indeterminación.
$$\lim_{x \to 0^+}\left(\left(\frac{\left(- \cot^{2}{\left(x \right)} - 1\right) \sin{\left(x \right)}}{\cot{\left(x \right)}} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)}\right) \cot^{\sin{\left(x \right)}}{\left(x \right)}\right)$$
=
Introducimos una pequeña modificación de la función bajo el signo del límite
$$\lim_{x \to 0^+}\left(\frac{\left(\left(- \cot^{2}{\left(x \right)} - 1\right) \sin{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} \cot{\left(x \right)}\right) \cot^{\sin{\left(x \right)}}{\left(x \right)}}{\cot{\left(x \right)}}\right)$$
=
$$\lim_{x \to 0^+}\left(\frac{\frac{d}{d x} \cot^{\sin{\left(x \right)} - 1}{\left(x \right)}}{\frac{d}{d x} \frac{1}{\left(- \cot^{2}{\left(x \right)} - 1\right) \sin{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} \cot{\left(x \right)}}}\right)$$
=
$$\lim_{x \to 0^+}\left(\frac{\log{\left(\cot{\left(x \right)} \right)}^{3} \cos^{3}{\left(x \right)} \cot^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \log{\left(\cot{\left(x \right)} \right)}^{2} \sin{\left(x \right)} \cos^{2}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \log{\left(\cot{\left(x \right)} \right)}^{2} \sin{\left(x \right)} \cos^{2}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)}^{2} \cos^{2}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)}^{2} \cos^{2}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \log{\left(\cot{\left(x \right)} \right)} \sin^{2}{\left(x \right)} \cos{\left(x \right)} \cot^{4}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 6 \log{\left(\cot{\left(x \right)} \right)} \sin^{2}{\left(x \right)} \cos{\left(x \right)} \cot^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \log{\left(\cot{\left(x \right)} \right)} \sin^{2}{\left(x \right)} \cos{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 2 \log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cos{\left(x \right)} \cot^{4}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 4 \log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cos{\left(x \right)} \cot^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 2 \log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cos{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - \sin^{3}{\left(x \right)} \cot^{5}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \sin^{3}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \sin^{3}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - \frac{\sin^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)}}{\cot{\left(x \right)}} + \sin^{2}{\left(x \right)} \cot^{5}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \sin^{2}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \sin^{2}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + \frac{\sin^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)}}{\cot{\left(x \right)}}}{\left(\log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cot{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} \cot^{2}{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} - 2 \sin{\left(x \right)} \cot^{3}{\left(x \right)} - 2 \sin{\left(x \right)} \cot{\left(x \right)} + 2 \cos{\left(x \right)} \cot^{2}{\left(x \right)} + 2 \cos{\left(x \right)}\right) \cot{\left(x \right)}}\right)$$
=
$$\lim_{x \to 0^+}\left(\frac{\log{\left(\cot{\left(x \right)} \right)}^{3} \cos^{3}{\left(x \right)} \cot^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \log{\left(\cot{\left(x \right)} \right)}^{2} \sin{\left(x \right)} \cos^{2}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \log{\left(\cot{\left(x \right)} \right)}^{2} \sin{\left(x \right)} \cos^{2}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)}^{2} \cos^{2}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)}^{2} \cos^{2}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \log{\left(\cot{\left(x \right)} \right)} \sin^{2}{\left(x \right)} \cos{\left(x \right)} \cot^{4}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 6 \log{\left(\cot{\left(x \right)} \right)} \sin^{2}{\left(x \right)} \cos{\left(x \right)} \cot^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \log{\left(\cot{\left(x \right)} \right)} \sin^{2}{\left(x \right)} \cos{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 2 \log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cos{\left(x \right)} \cot^{4}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 4 \log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cos{\left(x \right)} \cot^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 2 \log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cos{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - \sin^{3}{\left(x \right)} \cot^{5}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \sin^{3}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - 3 \sin^{3}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} - \frac{\sin^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)}}{\cot{\left(x \right)}} + \sin^{2}{\left(x \right)} \cot^{5}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \sin^{2}{\left(x \right)} \cot^{3}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + 3 \sin^{2}{\left(x \right)} \cot{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)} + \frac{\sin^{2}{\left(x \right)} \cot^{\sin{\left(x \right)}}{\left(x \right)}}{\cot{\left(x \right)}}}{\left(\log{\left(\cot{\left(x \right)} \right)} \sin{\left(x \right)} \cot{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} \cot^{2}{\left(x \right)} + \log{\left(\cot{\left(x \right)} \right)} \cos{\left(x \right)} - 2 \sin{\left(x \right)} \cot^{3}{\left(x \right)} - 2 \sin{\left(x \right)} \cot{\left(x \right)} + 2 \cos{\left(x \right)} \cot^{2}{\left(x \right)} + 2 \cos{\left(x \right)}\right) \cot{\left(x \right)}}\right)$$
=
$$\infty$$
Como puedes ver, hemos aplicado el método de l'Hopital (utilizando la derivada del numerador y denominador) 1 vez (veces)