## Precalculus (6th Edition) Blitzer

Domain : $[-2, 2]$ and Range: $[-\dfrac{\pi}{2}, \dfrac{\pi}{2}]$
Doubling the period of the sine curve result in the domain getting doubled. The range remains the same. Therefore, we have the Domain and Range of the function as follows: Domain : $[-2, 2]$ and Range: $[-\dfrac{\pi}{2}, \dfrac{\pi}{2}]$