Determine a region whose area $is$ equal $to$ the given $limit.Do$ not evaluate the $limit.$

$\underset{n}{lim}{\displaystyle \underset{i=1}{\overset{n}{}}}\frac{}{9n}tan(\frac{i}{9n})$

$tan(x)on[-\frac{}{9},\frac{}{9}]$

$xtan(x)on[-\frac{}{9},\frac{}{9}]$

$xtan(x)on[0,\frac{}{9}]$

$tan(x)on[0,9]$

$tan(x)on[0,\frac{}{9}]$