El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\cot^{2}{\left(x \right)}}{1 - \sin{\left(x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = 29.8451303343455$$
$$x_{2} = 86.3937978820204$$
$$x_{3} = 54.9778706524075$$
$$x_{4} = -83.2522057032054$$
$$x_{5} = -20.4203518918673$$
$$x_{6} = 10.9955734560039$$
$$x_{7} = 42.4115007208633$$
$$x_{8} = -7.85398190692698$$
$$x_{9} = -89.5353907636473$$
$$x_{10} = 42.4115000802774$$
$$x_{11} = 92.6769829752567$$
$$x_{12} = -26.7035366815322$$
$$x_{13} = 67.5442424512984$$
$$x_{14} = 23.5619452792029$$
$$x_{15} = -1.57079644043846$$
$$x_{16} = 61.2610577280671$$
$$x_{17} = -39.2699085322023$$
$$x_{18} = 36.1283157423926$$
$$x_{19} = 73.8274274971964$$
$$x_{20} = -76.9690209467468$$
$$x_{21} = 98.9601678458735$$
$$x_{22} = -95.8185758677487$$
$$x_{23} = -83.2522049784497$$
$$x_{24} = 42.4114998709236$$
$$x_{25} = 17.278760521352$$
$$x_{26} = 73.8274278988752$$
$$x_{27} = -51.8362786876967$$
$$x_{28} = -7.85398138120039$$
$$x_{29} = -70.6858338809263$$
$$x_{30} = -45.5530936019285$$
$$x_{31} = 80.1106131078506$$
$$x_{32} = 86.3937977948501$$
$$x_{33} = 4.71238863783119$$
$$x_{34} = 17.2787600767899$$
$$x_{35} = -32.9867237436118$$
$$x_{36} = -51.8362783459258$$
$$x_{37} = -64.4026490619868$$
$$x_{38} = 48.6946858069631$$
$$x_{39} = -7.8539814893153$$
$$x_{40} = -14.137166828418$$
$$x_{41} = -58.1194639911848$$
$$x_{42} = -14.1371682421482$$
$$x_{43} = -64.4026502366883$$