The sinusoidal function has a median line that is the horizontal axis midway between its maximum and minimum values. The amplitude is the maximum displacement of the curve from the median line and is calculated as the difference between the maximum and minimum values divided by two. The period is the length of the shortest interval in which the wave repeats itself.

1. Characteristics of the Sinusoidal Function Median Line Median Line is sometimes called the axis, and is the horizontal line midway between the maximum and minimum value of the sine curve. Maximum value Minimum value

2. Amplitude amplitude The Amplitude (a) is the maximum displacement of the curve from the median. a = max value – min value 2

3. Period period The Period is the length of the shortest interval in which the wave repeats itself.