Domain of Cosine and Inverse Cosine Functions

The domain of $\arccos x$ is all real numbers, while cosine’s domain is [-1, 1]; this allows $\arccos x$ to solve a wider range of trigonometric equations than the standard cosine function.

The domain of $\arccos x$ is [0, π], while cosine’s domain is all real numbers; this expands the range of values for which $\arccos x$ can provide solutions in trigonometric equations.

The domain of $\arccos x$ is [-1, 1], while cosine’s domain is all real numbers; this restricts the range of values for which $\arccos x$ can provide solutions in trigonometric equations.

The domain of $\arccos x$ is (0, 2π), while cosine’s domain is all real numbers; this limits the applicability of $\arccos x$ in solving complex trigonometric equations.