sinx-cosx=0 | :(1/√2)
(1/√2)sinx-(1/√2)cosx=0
sinxsin(π/4)-cosxcos(π/4)=0
cos(x+π/4)=0
x+π/4=π/2+πn, n - целое число
x=π/4+πn, n - целое число
sinx-cosx=0 | :(1/√2)
(1/√2)sinx-(1/√2)cosx=0
sinxsin(π/4)-cosxcos(π/4)=0
cos(x+π/4)=0
x+π/4=π/2+πn, n - целое число
x=π/4+πn, n - целое число