Question

cos(п/6-3x)= -1 решите пожалуйста

Answer 1

cos (3x - π/6) = - 1
3x - π/6 = π + 2πn
3x = π/6 + π + 2πn
3x = 7π/6 + 2πn
x = 7π/18 + 2πn/3