Question

What is meant by the amplitude of a trigonometric function?

Answer 1

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.)