(sina)^4/(sinx)^2+(cosa)^4/(cosx)^2=1 la ecuación
El profesor se sorprenderá mucho al ver tu solución correcta😉
Solución
/ / 1 \\ / / 1 \\
x1 = - 2*re|atan|------|| - 2*I*im|atan|------||
| | /a\|| | | /a\||
| |tan|-||| | |tan|-|||
\ \ \2/// \ \ \2///
$$x_{1} = - 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}$$
/ / 1 \\ / / 1 \\
x2 = 2*re|atan|------|| + 2*I*im|atan|------||
| | /a\|| | | /a\||
| |tan|-||| | |tan|-|||
\ \ \2/// \ \ \2///
$$x_{2} = 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}$$
/ / /a\\\ / / /a\\\
x3 = - 2*re|atan|tan|-||| - 2*I*im|atan|tan|-|||
\ \ \2/// \ \ \2///
$$x_{3} = - 2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}$$
/ / /a\\\ / / /a\\\
x4 = 2*re|atan|tan|-||| + 2*I*im|atan|tan|-|||
\ \ \2/// \ \ \2///
$$x_{4} = 2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}$$
x4 = 2*re(atan(tan(a/2))) + 2*i*im(atan(tan(a/2)))
Suma y producto de raíces
[src]
/ / 1 \\ / / 1 \\ / / 1 \\ / / 1 \\ / / /a\\\ / / /a\\\ / / /a\\\ / / /a\\\
- 2*re|atan|------|| - 2*I*im|atan|------|| + 2*re|atan|------|| + 2*I*im|atan|------|| + - 2*re|atan|tan|-||| - 2*I*im|atan|tan|-||| + 2*re|atan|tan|-||| + 2*I*im|atan|tan|-|||
| | /a\|| | | /a\|| | | /a\|| | | /a\|| \ \ \2/// \ \ \2/// \ \ \2/// \ \ \2///
| |tan|-||| | |tan|-||| | |tan|-||| | |tan|-|||
\ \ \2/// \ \ \2/// \ \ \2/// \ \ \2///
$$\left(\left(\left(- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}\right) + \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}\right)\right) + \left(- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}\right)\right) + \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}\right)$$
$$0$$
/ / / 1 \\ / / 1 \\\ / / / 1 \\ / / 1 \\\ / / / /a\\\ / / /a\\\\ / / / /a\\\ / / /a\\\\
|- 2*re|atan|------|| - 2*I*im|atan|------|||*|2*re|atan|------|| + 2*I*im|atan|------|||*|- 2*re|atan|tan|-||| - 2*I*im|atan|tan|-||||*|2*re|atan|tan|-||| + 2*I*im|atan|tan|-||||
| | | /a\|| | | /a\||| | | | /a\|| | | /a\||| \ \ \ \2/// \ \ \2//// \ \ \ \2/// \ \ \2////
| | |tan|-||| | |tan|-|||| | | |tan|-||| | |tan|-||||
\ \ \ \2/// \ \ \2//// \ \ \ \2/// \ \ \2////
$$\left(- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}\right) \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}\right) \left(- 2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} - 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}\right) \left(2 \operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} + 2 i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}\right)$$
2 2
/ / / 1 \\ / / 1 \\\ / / / /a\\\ / / /a\\\\
16*|I*im|atan|------|| + re|atan|------||| *|I*im|atan|tan|-||| + re|atan|tan|-||||
| | | /a\|| | | /a\||| \ \ \ \2/// \ \ \2////
| | |tan|-||| | |tan|-||||
\ \ \ \2/// \ \ \2////
$$16 \left(\operatorname{re}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\frac{1}{\tan{\left(\frac{a}{2} \right)}} \right)}\right)}\right)^{2} \left(\operatorname{re}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)} + i \operatorname{im}{\left(\operatorname{atan}{\left(\tan{\left(\frac{a}{2} \right)} \right)}\right)}\right)^{2}$$
16*(i*im(atan(1/tan(a/2))) + re(atan(1/tan(a/2))))^2*(i*im(atan(tan(a/2))) + re(atan(tan(a/2))))^2