El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\frac{\cos{\left(x \right)} + 1}{1 - \sin{\left(x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = \pi$$
Solución numérica$$x_{1} = -91.106186681108$$
$$x_{2} = 21.9911490338418$$
$$x_{3} = 72.256631027666$$
$$x_{4} = -72.2566304987613$$
$$x_{5} = -84.8230008566789$$
$$x_{6} = -15.7079632985002$$
$$x_{7} = -53.4070737191963$$
$$x_{8} = 84.823002728203$$
$$x_{9} = -91.1061859448485$$
$$x_{10} = 15.7079638137821$$
$$x_{11} = -3.14159160941489$$
$$x_{12} = 3.14159288856925$$
$$x_{13} = 72.2566314249399$$
$$x_{14} = 53.4070757772139$$
$$x_{15} = 47.1238906284848$$
$$x_{16} = -3.14159237496889$$
$$x_{17} = -53.4070747871536$$
$$x_{18} = 9.42477815078717$$
$$x_{19} = 53.4070753040662$$
$$x_{20} = -47.1238895280478$$
$$x_{21} = -72.2566309095056$$
$$x_{22} = 3.14159346647846$$
$$x_{23} = 91.1061871944527$$
$$x_{24} = -97.3893708986472$$
$$x_{25} = 78.5398166734879$$
$$x_{26} = -28.2743333425357$$
$$x_{27} = -97.3893719406323$$
$$x_{28} = -78.5398161559107$$
$$x_{29} = 40.8407037523427$$
$$x_{30} = 97.3893724573035$$
$$x_{31} = 78.53981609769$$
$$x_{32} = 78.5398178260203$$
$$x_{33} = -28.2743337545468$$
$$x_{34} = -47.1238906431225$$
$$x_{35} = -34.5575190025373$$
$$x_{36} = 84.8230019312491$$
$$x_{37} = -59.6902600376794$$
$$x_{38} = 34.5575206430736$$
$$x_{39} = 40.8407047781297$$
$$x_{40} = 59.6902605548735$$
$$x_{41} = 15.7079634002411$$
$$x_{42} = 84.8230009460962$$
$$x_{43} = 21.9911485849902$$
$$x_{44} = -3.1415934439951$$
$$x_{45} = -91.1061878452649$$
$$x_{46} = 65.9734461889958$$
$$x_{47} = -59.6902604615253$$
$$x_{48} = -40.8407036952393$$
$$x_{49} = -9.42477653864305$$
$$x_{50} = 9.42477861877909$$
$$x_{51} = -47.1238887773929$$
$$x_{52} = 65.9734457514226$$
$$x_{53} = -65.9734452762738$$
$$x_{54} = -21.9911481212476$$
$$x_{55} = -84.8230014173292$$
$$x_{56} = 40.8407055591089$$
$$x_{57} = 91.1061877907903$$
$$x_{58} = 34.5575189278379$$
$$x_{59} = 28.2743342706857$$
$$x_{60} = -65.9734457686436$$
$$x_{61} = -53.4070754145189$$
$$x_{62} = 97.3893729358167$$
$$x_{63} = -97.3893725871436$$
$$x_{64} = -9.42477824287903$$
$$x_{65} = 34.5575195199057$$
$$x_{66} = 59.6902609701947$$
$$x_{67} = -9.42477763364125$$
$$x_{68} = -78.5398156976101$$
$$x_{69} = -34.5575185394937$$
$$x_{70} = -40.8407042643771$$
$$x_{71} = 28.2743338645174$$
$$x_{72} = -21.9911485867267$$
$$x_{73} = 47.1238900415119$$
$$x_{74} = -15.7079628835204$$