what is the domain of f(x) = cos(x)?\no the set of real numbers -2π≤x≤2π\no the set of real numbers…

what is the domain of f(x) = cos(x)?\no the set of real numbers -2π≤x≤2π\no the set of real numbers -1≤x≤1\no the set of real numbers 0≤x≤2π\no the set of all real numbers
Answer
Brief Explanations:
The cosine function, $y = \cos(x)$, is defined for any real - valued input $x$. There are no restrictions such as division by zero or taking the square root of a negative number for the cosine function. So, its domain is the set of all real numbers.
Answer:
the set of all real numbers