El gráfico de la función cruce el eje X con f = 0
o sea hay que resolver la ecuación:
$$\sin{\left(x \right)} + 5 \cos{\left(x \right)} = 0$$
Resolvermos esta ecuaciónPuntos de cruce con el eje X:
Solución analítica$$x_{1} = - \operatorname{atan}{\left(5 \right)}$$
Solución numérica$$x_{1} = -54.7804758779715$$
$$x_{2} = -76.7716244531001$$
$$x_{3} = 64.6000449584406$$
$$x_{4} = -215.001701211051$$
$$x_{5} = -35.9309199564327$$
$$x_{6} = 23.7593404617733$$
$$x_{7} = 55.1752669976713$$
$$x_{8} = 89.732786187159$$
$$x_{9} = 11.1929698474142$$
$$x_{10} = -86.1964024138694$$
$$x_{11} = -92.479587721049$$
$$x_{12} = 61.4584523048509$$
$$x_{13} = -67.3468464923307$$
$$x_{14} = 14.3345625010039$$
$$x_{15} = -89.3379950674592$$
$$x_{16} = -10.7981787277144$$
$$x_{17} = -61.0636611851511$$
$$x_{18} = 4.90978454023457$$
$$x_{19} = 70.8832302656202$$
$$x_{20} = -48.4972905707919$$
$$x_{21} = 42.6088963833121$$
$$x_{22} = 33.1841184225427$$
$$x_{23} = -83.0548097602796$$
$$x_{24} = 67.7416376120304$$
$$x_{25} = 8.05137719382436$$
$$x_{26} = 83.4496008799794$$
$$x_{27} = 92.8743788407488$$
$$x_{28} = -17.081364034894$$
$$x_{29} = 99.1575641479284$$
$$x_{30} = -45.3556979172021$$
$$x_{31} = 20.6177478081835$$
$$x_{32} = -26.5061419956634$$
$$x_{33} = -1.37340076694502$$
$$x_{34} = 48.8920816904917$$
$$x_{35} = 45.7504890369019$$
$$x_{36} = 17.4761551545937$$
$$x_{37} = -32.7893273028429$$
$$x_{38} = -70.4884391459205$$
$$x_{39} = -7.6565860741246$$
$$x_{40} = -29.6477346492532$$
$$x_{41} = -51.6388832243817$$
$$x_{42} = 74.02482291921$$
$$x_{43} = 52.0336743440815$$
$$x_{44} = -95.6211803746388$$
$$x_{45} = -39.0725126100225$$
$$x_{46} = -42.2141052636123$$
$$x_{47} = -79.9132171066898$$
$$x_{48} = -4.51499342053481$$
$$x_{49} = -73.6300317995103$$
$$x_{50} = 86.5911935335692$$
$$x_{51} = 77.1664155727998$$
$$x_{52} = 1.76819188664478$$
$$x_{53} = 58.3168596512611$$
$$x_{54} = 39.4673037297223$$
$$x_{55} = 80.3080082263896$$
$$x_{56} = -23.3645493420736$$
$$x_{57} = -57.9220685315613$$
$$x_{58} = 26.9009331153631$$
$$x_{59} = 30.0425257689529$$
$$x_{60} = -98.7627730282286$$
$$x_{61} = -13.9397713813042$$
$$x_{62} = 96.0159714943386$$
$$x_{63} = 36.3257110761325$$
$$x_{64} = -64.2052538387409$$
$$x_{65} = -20.2229566884838$$