El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$1 + \frac{\cos{\left(x \right)}}{1 - \sin{\left(x \right)}} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución numérica$$x_{1} = 3.14159265358979$$
$$x_{2} = -47.1238898038469$$
$$x_{3} = -34.5575191894877$$
$$x_{4} = -65.9734457253857$$
$$x_{5} = 59.6902604182061$$
$$x_{6} = 72.2566310325652$$
$$x_{7} = 91.106186954104$$
$$x_{8} = -91.106186954104$$
$$x_{9} = -9.42477796076938$$
$$x_{10} = 65.9734457253857$$
$$x_{11} = 21.9911485751286$$
$$x_{12} = -40.8407044966673$$
$$x_{13} = -53.4070751110265$$
$$x_{14} = 97.3893722612836$$
$$x_{15} = 78.5398163397448$$
$$x_{16} = -103.672557568463$$
$$x_{17} = 53.4070751110265$$
$$x_{18} = 47.1238898038469$$
$$x_{19} = 28.2743338823081$$
$$x_{20} = 34.5575191894877$$
$$x_{21} = -15.707963267949$$
$$x_{22} = -3.14159265358979$$
$$x_{23} = -59.6902604182061$$
$$x_{24} = -28.2743338823081$$
$$x_{25} = 9.42477796076938$$
$$x_{26} = -21.9911485751286$$
$$x_{27} = 15.707963267949$$
$$x_{28} = 84.8230016469244$$
$$x_{29} = -78.5398163397448$$
$$x_{30} = -72.2566310325652$$
$$x_{31} = -84.8230016469244$$
$$x_{32} = -97.3893722612836$$
$$x_{33} = 40.8407044966673$$