Question

Which inverse trigonometric functions have the same domain?

Answer 1

Answer:

B

Step-by-step explanation:

1. The function $y=\cos^{-1}x$ has the domain:

$-1\le x\le 1.$

2. The function $y=\sin^{-1}x$ has the domain:

$-1\le x\le 1.$

3. The function $y=\tan^{-1}x$ has the domain:

$-\infty\le x\le \infty.$

Thus, option B is true, the functions $y=\cos^{-1}x$ and $y=\sin^{-1}x$ have the same domain.