Question

Which function has a domain of all real numbers?

Y = sinx
Y = cotx
Y = tanx
Y = secx

Answer 1

Sinx=Y has a domain of all real numbers.

Answer 2

Answer: The answer is (A) y = sinx.

Step-by-step explanation: We are given to select the correct function from the options that has a domain of all real numbers.

We know that only some function and cos function has a domain of all real numbers.

Thus, out of the given options, only the since function has a domain
`(-\infty,\infty)` and range of
`[-1,1].`

The domain of the other three functions are different from some function.

Thus, the correct option is (A) y = sinx.