Answer:
B
Step-by-step explanation:
1. The function [tex]y=\cos^{-1}x[/tex] has the domain:
[tex]-1\le x\le 1.[/tex]
2. The function [tex]y=\sin^{-1}x[/tex] has the domain:
[tex]-1\le x\le 1.[/tex]
3. The function [tex]y=\tan^{-1}x[/tex] has the domain:
[tex]-\infty\le x\le \infty.[/tex]
Thus, option B is true, the functions [tex]y=\cos^{-1}x[/tex] and [tex]y=\sin^{-1}x[/tex] have the same domain.
