Объяснение:
-2sin(x+y)/2sin(x-y)/2=-√2
sin(x+y)/2*sinП/4=√2/2
sin(x+y)/2=1
(x+y)/2=П/2+2пk x+y=П+4Пk
x-y=п/2 x-y=П/2
2x=3П/2+4Пk
x=3П/4+2Пk
y=x-п/2=П/4+2Пk
Объяснение:
-2sin(x+y)/2sin(x-y)/2=-√2
sin(x+y)/2*sinП/4=√2/2
sin(x+y)/2=1
(x+y)/2=П/2+2пk x+y=П+4Пk
x-y=п/2 x-y=П/2
2x=3П/2+4Пk
x=3П/4+2Пk
y=x-п/2=П/4+2Пk