Question

решите уравнение cos(2x-П/4)=0

Answer 1

cos(2x-П/4)=0
2x-π/4=π/2+πk;k∈Z
2x=π/2+π/4+πk;k∈Z
2x=3π/4+πk;k∈Z
x=3π/8+πk/2;k∈z