(решить систему уравнений)
[tex]\left \{ {{cox+cosy=1} \atop {x+y=2\pi}} \right.[/tex]
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(решить систему уравнений)
[tex]\left \{ {{cox+cosy=1} \atop {x+y=2\pi}} \right.[/tex]
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Answers & Comments
cosx+cosy=1 cos(2П-y)+cosy=1 2cosy=1 cosy=1/2
x+y=2П x=2П-y x=2П-y x=2П-y
y=П/3+2Пn и y=-П/3+2Пn
х=5П/3-2Пn и х=7П/3-2Пn