Final answer:
The vertical shift of the function is 0.01 units upwards from the y-axis.
Step-by-step explanation:
The vertical shift of the function y = 0.9(sin(π/3-x)+0.01) is 0.01. The vertical shift is the constant term added or subtracted to the function, which shifts the entire graph vertically. In this case, a vertical shift of 0.01 means the graph will be shifted 0.01 units upwards from the y-axis.