Find all the tangents to the curve `y=cos (x+y),-2 pi le x le 2 pi` that are parallel to the line `x+2y=0`.

find all the tangents to the curve y=cos(x+y),-2pilexle2pi that are parallel to the line x+2y=0

Find all the tangents to the curve y=cos(x+y),-2 pi<=x<=2 pi that are parallel to the line x+2y=0

Find all the tangents to the curve y=cos(x+y),-2pilt=xlt=2pi that are parallel to the line x+2y=0.

Find all the tangents to the curve y=cos(x+y),-2pilt=xlt=2pi that are parallel to the line x+2y=0.

Find all the tangents to the curve y=cos(x+y),-2pilt=xlt=2pi \ that are parallel to the line x+2y=0.

Find the equation of tangents to the curve y = cos(x+y), -2pi le x le 2pi that are parallel to the line x + 2y = 0

The equation of tangents to the curve y=cos(x+y), -2pi le x le 2pi that are parallel to the line x+2y=0 , is

The equation of tangents to the curve y=cos(x+y), -2pi le x le 2pi that are parallel to the line x+2y=0 , is