What is meant by the amplitude of a trigonometric function?

1 Answer
Feb 11, 2016

The amplitude is the distance from the midline to the maximum or to the minimum (they are the same). For example, #y = sin(x)# has an amplitude of 1 because the midline is #y=0# and the max is 1.

This can be found by finding the range of the function and dividing by two. (See if you can figure out why.)