El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\sin{\left(x \right)} + 1}{1 - \cos{\left(x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \frac{\pi}{2}$$
$$x_{2} = \frac{3 \pi}{2}$$
Solución numérica$$x_{1} = -51.8362786647334$$
$$x_{2} = 61.2610582500604$$
$$x_{3} = -58.1194644480702$$
$$x_{4} = 23.5619454321752$$
$$x_{5} = 61.2610558661276$$
$$x_{6} = 73.8274275280824$$
$$x_{7} = 54.9778707348059$$
$$x_{8} = -20.4203517507281$$
$$x_{9} = -64.4026489320139$$
$$x_{10} = 17.27875934175$$
$$x_{11} = -7.85398143955014$$
$$x_{12} = -26.7035384616844$$
$$x_{13} = -58.1194639738807$$
$$x_{14} = -83.2522059194916$$
$$x_{15} = 54.9778712314506$$
$$x_{16} = -89.5353907245238$$
$$x_{17} = -1.57079681705452$$
$$x_{18} = -70.6858349642237$$
$$x_{19} = -70.6858334576112$$
$$x_{20} = -20.4203525495775$$
$$x_{21} = 23.5619437331811$$
$$x_{22} = -39.2699083323478$$
$$x_{23} = 29.8451298594713$$
$$x_{24} = -64.4026497028546$$
$$x_{25} = 73.8274270131857$$
$$x_{26} = 10.9955735753649$$
$$x_{27} = -39.2699087622788$$
$$x_{28} = 17.2787610080476$$
$$x_{29} = -20.4203534393072$$
$$x_{30} = 10.9955740783498$$
$$x_{31} = -76.9690202277841$$
$$x_{32} = -32.9867230747276$$
$$x_{33} = 61.2610564947259$$
$$x_{34} = 67.5442426168149$$
$$x_{35} = 86.3937979006809$$
$$x_{36} = -95.8185763578712$$
$$x_{37} = 36.1283159191971$$
$$x_{38} = 92.6769831293827$$
$$x_{39} = 92.6769827086389$$
$$x_{40} = -7.8539820487734$$
$$x_{41} = 36.128315105695$$
$$x_{42} = 4.71238839481131$$
$$x_{43} = 48.6946859753878$$
$$x_{44} = -89.5353911282367$$
$$x_{45} = -64.4026506125513$$
$$x_{46} = 73.8274257573467$$
$$x_{47} = 17.2787587024013$$
$$x_{48} = -14.1371668069163$$
$$x_{49} = 4.71238882147948$$
$$x_{50} = -70.6858356261438$$
$$x_{51} = -45.5530935686252$$
$$x_{52} = 48.6946855517826$$
$$x_{53} = -95.8185758568388$$
$$x_{54} = -26.7035378112328$$
$$x_{55} = -26.7035362276571$$
$$x_{56} = -76.9690207441357$$
$$x_{57} = -1.57079641247742$$
$$x_{58} = 42.4115003384217$$
$$x_{59} = 67.5442417569018$$
$$x_{60} = -32.9867235842799$$
$$x_{61} = 98.96016789405$$
$$x_{62} = -45.5530939726067$$
$$x_{63} = -51.8362792032951$$
$$x_{64} = -83.252205486099$$
$$x_{65} = 86.3937974938237$$
$$x_{66} = 80.1106122601112$$
$$x_{67} = 42.4115007439469$$
$$x_{68} = 67.5442409049482$$
$$x_{69} = 23.5619446036743$$
$$x_{70} = -14.1371672942804$$
$$x_{71} = 29.8451303603741$$
$$x_{72} = 98.9601683845773$$