Answer:
0 ≤ x ≤ π
Step-by-step explanation:
In order to define the inverse cosine functions, the domains of the cosine functions are restricted.
One major condition to define an inverse of a function is that the original function must be one‐to‐one which means that one value from the domain should correspond to only one value in the range.
So we have a restriction that is placed on the values of the domain of the cosine function which is the following:
0 ≤ x ≤ π
