Solución detallada
Tenemos la ecuación
$$\sin{\left(y \right)} \cos{\left(x \right)} = \sin{\left(x \right)} \cos{\left(y \right)}$$
cambiamos:
$$- \frac{\sin{\left(x \right)} \cos{\left(y \right)}}{\cos{\left(x \right)}} = - \sin{\left(y \right)}$$
o
$$- \cos{\left(y \right)} \tan{\left(x \right)} = - \sin{\left(y \right)}$$
es la ecuación trigonométrica más simple
Dividamos ambos miembros de la ecuación en -cos(y)
La ecuación se convierte en
$$\tan{\left(x \right)} = - \frac{\sin{\left(y \right)}}{\cos{\left(y \right)}}$$
Esta ecuación se reorganiza en
$$x = \pi n + \operatorname{atan}{\left(- \frac{\sin{\left(y \right)}}{\cos{\left(y \right)}} \right)}$$
O
$$x = \pi n - \operatorname{atan}{\left(\frac{\sin{\left(y \right)}}{\cos{\left(y \right)}} \right)}$$
, donde n es cualquier número entero
Suma y producto de raíces
[src]
/ / 1 \\ / / 1 \\ / / /y\\\ / / /y\\\
- 2*re|atan|------|| - 2*I*im|atan|------|| + 2*re|atan|tan|-||| + 2*I*im|atan|tan|-|||
| | /y\|| | | /y\|| \ \ \2/// \ \ \2///
| |tan|-||| | |tan|-|||
\ \ \2/// \ \ \2///
$$\left(- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)}\right) + \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)}\right)$$
/ / 1 \\ / / /y\\\ / / 1 \\ / / /y\\\
- 2*re|atan|------|| + 2*re|atan|tan|-||| - 2*I*im|atan|------|| + 2*I*im|atan|tan|-|||
| | /y\|| \ \ \2/// | | /y\|| \ \ \2///
| |tan|-||| | |tan|-|||
\ \ \2/// \ \ \2///
$$- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)} + 2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)}$$
/ / / 1 \\ / / 1 \\\ / / / /y\\\ / / /y\\\\
|- 2*re|atan|------|| - 2*I*im|atan|------|||*|2*re|atan|tan|-||| + 2*I*im|atan|tan|-||||
| | | /y\|| | | /y\||| \ \ \ \2/// \ \ \2////
| | |tan|-||| | |tan|-||||
\ \ \ \2/// \ \ \2////
$$\left(- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)}\right) \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)}\right)$$
/ / / 1 \\ / / 1 \\\ / / / /y\\\ / / /y\\\\
-4*|I*im|atan|------|| + re|atan|------|||*|I*im|atan|tan|-||| + re|atan|tan|-||||
| | | /y\|| | | /y\||| \ \ \ \2/// \ \ \2////
| | |tan|-||| | |tan|-||||
\ \ \ \2/// \ \ \2////
$$- 4 \left(\operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)}\right) \left(\operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)}\right)$$
-4*(i*im(atan(1/tan(y/2))) + re(atan(1/tan(y/2))))*(i*im(atan(tan(y/2))) + re(atan(tan(y/2))))
/ / 1 \\ / / 1 \\
x1 = - 2*re|atan|------|| - 2*I*im|atan|------||
| | /y\|| | | /y\||
| |tan|-||| | |tan|-|||
\ \ \2/// \ \ \2///
$$x_{1} = - 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{y}{2} \right)}} \right)}\right)}$$
/ / /y\\\ / / /y\\\
x2 = 2*re|atan|tan|-||| + 2*I*im|atan|tan|-|||
\ \ \2/// \ \ \2///
$$x_{2} = 2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{y}{2} \right)} \right)}\right)}$$
x2 = 2*re(atan(tan(y/2))) + 2*i*im(atan(tan(y/2)))