Answer
amplitude: $2$
period: $2\pi$
Work Step by Step
If a function has form $y=A\cos(\omega x)$, then there $|A|$ stands for the amplitude.
First we identify $\omega$ and $A$ from the form of $y=A\sin{(\omega x)}$.
Hence $A=2$, $\omega=1.$
To get the period $T$, we can use the formula $T=\frac{2\pi}{\omega}$ to obtain:
$T=\frac{2\pi}{1}=2\pi$