具体见下表：
x 0 π/2 π 3π/2 2π
y=sinx 0 1 0 -1 0
x+π/6 0 π/2 π 3π/2 2π
x -π/6 π/3 5π/6 4π/3 11π/6
y=sin(x+π/6) 0 1 0 -1 0
对应五点见上表.