Q.96 - Precalculus Enhanced with Graphing Utilities

Question

What is the domain of cosine function

Step-by-Step Solution

Answer

Set of all real numbers is the domain of cosine function

Step 1: Given information

We are given a cosine function

Step 2: Explanation

As we have $y=\cos \left(\theta \right)$ the function exist for all values of $\theta$. hence the set of real numbers is the domain of the function.