sinX + 1/2 = 0

sinX = -1/2

X1 = 7π/6 ±2π*n

X2 = 11π/6 ±2π*m

2sin(4X-π/3) = √3

sin(4X-π/3) = √3/2

4X1-π/3 = π/3 ±2π*n

4X1 = 2π/3 ±2π*n

X1 = π/6 ±(π/2)*n

4X2-π/3 = 2π/3 ±2π*m

4X2 = π ±2π*m

X2 = π/4 ±(π/2)*m