Sin10x-cos4x=0 помогитеее
Sin10x-sin(π/2-4x)=0 2sin(7x-π/4)cos(3x+π/4)=0 sin(7x-π/4)=0 7x-π/4=πn,n∈Z 7x=π/4+πn,n∈Z x=π/28+πn/7,n∈Z cos(3x+π/4)=0 3x+π/4=π/2+πk 3x=π/4+πk x=π/12+πk/3