Answer
$\frac{\sin A}{a}=\frac{ \sin B}{b}=\frac{\sin C}{c}$
Work Step by Step
Since by Law of Sine
$\frac{a}{ \sin A}=\frac{b}{ \sin B}=\frac{c}{ \sin C}$
we can reverse each fraction:
$\frac{\sin A}{a}=\frac{ \sin B}{b}=\frac{\sin C}{c}$