Final answer:
The amplitude represents maximum displacement, the period represents the time for one wave cycle, and the phase shift indicates the starting point of oscillations.
Step-by-step explanation:
In trigonometric functions, the amplitude represents the maximum displacement of the function from its midline or average value. It measures the height or size of the function's oscillations.
The period represents the time it takes for one complete wave cycle to occur. It measures the length of one complete oscillation of the function.
The phase shift represents a horizontal shift of the function along the x-axis. It indicates the starting point of the function's oscillations in relation to the usual starting point.