Respuestas
Respuesta dada por:
6
Bueno lo que debemos aplicar son las propiedades de suma y resta de senos, además suma y resta de cosenos...
Suma de senos
![sin(x+y)=sin(x)cos(y)+sin(y)cos(x) sin(x+y)=sin(x)cos(y)+sin(y)cos(x)](https://tex.z-dn.net/?f=sin%28x%2By%29%3Dsin%28x%29cos%28y%29%2Bsin%28y%29cos%28x%29)
Resta de senos
![sin(x-y)=sin(x)cos(y)-sin(y)cos(x) sin(x-y)=sin(x)cos(y)-sin(y)cos(x)](https://tex.z-dn.net/?f=sin%28x-y%29%3Dsin%28x%29cos%28y%29-sin%28y%29cos%28x%29)
Suma de cosenos
![cos(x+y)=cos(x)cos(y)-sin(x)sin(y) cos(x+y)=cos(x)cos(y)-sin(x)sin(y)](https://tex.z-dn.net/?f=cos%28x%2By%29%3Dcos%28x%29cos%28y%29-sin%28x%29sin%28y%29)
Resta de cosenos
![cos(x-y)=cos(x)cos(y)+sin(x)sin(y) cos(x-y)=cos(x)cos(y)+sin(x)sin(y)](https://tex.z-dn.net/?f=cos%28x-y%29%3Dcos%28x%29cos%28y%29%2Bsin%28x%29sin%28y%29)
Además:
![sin(90 ^{o} )=1 \\ cos(90^{o})=0 \\ sin(270^{o})=-1 \\ cos(270^{o})=0 \\ sin(180^{o})=0 \\ cos(180^{o})=-1 \\ sin(360^{o})=0 \\ cos(360^{o})=1 sin(90 ^{o} )=1 \\ cos(90^{o})=0 \\ sin(270^{o})=-1 \\ cos(270^{o})=0 \\ sin(180^{o})=0 \\ cos(180^{o})=-1 \\ sin(360^{o})=0 \\ cos(360^{o})=1](https://tex.z-dn.net/?f=sin%2890+%5E%7Bo%7D+%29%3D1+%5C%5C+cos%2890%5E%7Bo%7D%29%3D0+%5C%5C+sin%28270%5E%7Bo%7D%29%3D-1+%5C%5C+cos%28270%5E%7Bo%7D%29%3D0+%5C%5C+sin%28180%5E%7Bo%7D%29%3D0+%5C%5C+cos%28180%5E%7Bo%7D%29%3D-1+%5C%5C+sin%28360%5E%7Bo%7D%29%3D0+%5C%5C+cos%28360%5E%7Bo%7D%29%3D1)
Con todo ésto vamos a resolver el ejercicio
![K=sin(90^{o}+x)+cos(270^{o}+x)+sin(180^{o}-x)+cos(360^{o}-x) \\ \\ [] [sin(90)cos(x)+sin(x)cos(90)]+[cos(270)cos(x)-sin(270)sin(x)]+.. \\ sin(180)cos(x)-sin(x)cos(180)+[cos(360)cos(x)+sin(360)sin(x)] \\ \\ (cos(x))+(0cos(x)-(-1)sin(x))+(0cos(x)-sin(x)(-1))+... \\ ...+((1)cos(x)+0sin(x)) \\ \\ cos(x)+sin(x)+sin(x)+cos(x)=2cos(x)+2sin(x) K=sin(90^{o}+x)+cos(270^{o}+x)+sin(180^{o}-x)+cos(360^{o}-x) \\ \\ [] [sin(90)cos(x)+sin(x)cos(90)]+[cos(270)cos(x)-sin(270)sin(x)]+.. \\ sin(180)cos(x)-sin(x)cos(180)+[cos(360)cos(x)+sin(360)sin(x)] \\ \\ (cos(x))+(0cos(x)-(-1)sin(x))+(0cos(x)-sin(x)(-1))+... \\ ...+((1)cos(x)+0sin(x)) \\ \\ cos(x)+sin(x)+sin(x)+cos(x)=2cos(x)+2sin(x)](https://tex.z-dn.net/?f=K%3Dsin%2890%5E%7Bo%7D%2Bx%29%2Bcos%28270%5E%7Bo%7D%2Bx%29%2Bsin%28180%5E%7Bo%7D-x%29%2Bcos%28360%5E%7Bo%7D-x%29+%5C%5C++%5C%5C+%5B%5D+%5Bsin%2890%29cos%28x%29%2Bsin%28x%29cos%2890%29%5D%2B%5Bcos%28270%29cos%28x%29-sin%28270%29sin%28x%29%5D%2B..+%5C%5C+sin%28180%29cos%28x%29-sin%28x%29cos%28180%29%2B%5Bcos%28360%29cos%28x%29%2Bsin%28360%29sin%28x%29%5D++%5C%5C++%5C%5C+%28cos%28x%29%29%2B%280cos%28x%29-%28-1%29sin%28x%29%29%2B%280cos%28x%29-sin%28x%29%28-1%29%29%2B...+%5C%5C+...%2B%28%281%29cos%28x%29%2B0sin%28x%29%29+%5C%5C++%5C%5C+cos%28x%29%2Bsin%28x%29%2Bsin%28x%29%2Bcos%28x%29%3D2cos%28x%29%2B2sin%28x%29)
Y eso sería todo..espero te sirva y si tienes alguna pregunta
Suma de senos
Resta de senos
Suma de cosenos
Resta de cosenos
Además:
Con todo ésto vamos a resolver el ejercicio
Y eso sería todo..espero te sirva y si tienes alguna pregunta
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