Answer
cot(x)
Work Step by Step
Note: tan(x) = $\frac{sin(x)}{cos(x)}$
Note: cot(x) = $\frac{1}{tan(x)}$
Using the above notes:
$\frac{cos(x)}{sin(x)}$ = $\frac{1}{\frac{sin(x)}{cos(x)}}$ = $\frac{1}{tan(x)}$ = cot(x)
Therefore:
$\frac{cos(x)}{sin(x)}$ = cot(x)
