Question

Решите тригонометрическое уравнение sin(x-1)=cos(x+2)

Answer 1

sin(x-1)=cos(x+2)cos(π/2-x+1)=cos(x+2) π/2-x+1=x+2+2πk -2x=1-π/2+2πk x=1/2 (π/2-1+2πk)