what is the domain of $f(x) = \\cos(x)$?\n\\bigcirc the set of real numbers $-2\\pi \\leq x \\leq…

what is the domain of $f(x) = \\cos(x)$?\n\\bigcirc the set of real numbers $-2\\pi \\leq x \\leq 2\\pi$\n\\bigcirc the set of real numbers $-1 \\leq x \\leq 1$\n\\bigcirc the set of real numbers $0 \\leq x \\leq 2\\pi$\n\\bigcirc the set of all real numbers

what is the domain of $f(x) = \\cos(x)$?\n\\bigcirc the set of real numbers $-2\\pi \\leq x \\leq 2\\pi$\n\\bigcirc the set of real numbers $-1 \\leq x \\leq 1$\n\\bigcirc the set of real numbers $0 \\leq x \\leq 2\\pi$\n\\bigcirc the set of all real numbers

Answer

Brief Explanations:

The domain of a function is the set of all possible input values (x-values) for which the function is defined. The cosine function (f(x) = \cos(x)) is defined for every real number x, as there are no restrictions on x that make (\cos(x)) undefined. The other options are either limited intervals (not the full domain) or the range of cosine (which is (-1 \leq y \leq 1)).

Answer:

the set of all real numbers