2sinx=√3

cos (x+π/3) = - 1

2sinx=√3

sinx=√3/2

x = (-1) ^n π/3+πn n∈Z

cos (x+π/3) = - 1

x + π/3 = π + 2πn n ∈ Z

x=2π/3 + 2πn n∈Z

1) 2sinx=_/3

sinx=_/3/2

x = (-1) ^k*arcsin (_/3/2) + pik

x = (-1) ^k*pi/3+pik

2) cos (x+pi/3) = - 1

x+pi/3=+-accos (-1) + 2pik

x+pi/3 = + - (pi-arccos1) + 2pik

x = + - ((pi-2pi) - pi/3) + 2pik

x = + - (-pi-pi/3) + 2pik

x = + - (-4pi/3) + 2pik