Question

2sin(x/7-x/28)-2=0 решите плиз

Answer 1

2sin(x/7-х/28)=2
sin(x/7-х/28)=1
x/7-х/28=х/2
x/7=15х/28
x=15х/4+7х*n,n=z

Answer 2

2sin(x/7-x/28)=2
sin((4x-x)/28)=1
sin(3x/28)=1
3x/28=π/2+2πk
x=28/3*π/2+28/3*2πk
x=14π/3+56/3*πk;k€Z