## Precalculus (6th Edition) Blitzer

$\frac{C}{B}$, $right$, $left$.
Rewriting the function as $y=AsinB(x-\frac{C}{B})$, we can identify the phase shift as $\frac{C}{B}$. If the phase shift is positive, we should shift the original curve to the $right$. If it is negative, we should shift the original to the $left$.