# What is the range of the graph of y = cos x?

$y = | A | \cos \left(x\right)$, where $| A |$ is the amplitude.
$y = 1 \cdot \cos \left(x\right)$
$y = \cos \left(x\right)$
The range for this trig problem is related to the amplitude. The amplitude for this function is 1. This function will oscillate between the $y$ values of $- 1$ and $1.$
The range is $\left[- 1 , 1\right] .$