# ACT Math : How to find the domain of the sine

## Example Questions

### Example Question #2972 : Act Math

Find the domain of the function:

Explanation:

The function  is related to the parent function , which has a domain of .

The value of theta for  has no restriction and is valid for all real numbers.

### Example Question #59 : Trigonometry

What is the domain of the given trigonometric function:

Explanation:

For both Sine and Cosine, since there are no asymptotes like Tangent and Cotangent functions, the function can take in any value for . Thus the domain is: