CPM Homework Help : INT2 Problem 12-135

The length of chord $\overline{AB}$ in $⊙D$ is $9$ mm. If $m\overarc{ A B }=32º$ , what is the length of $\overarc{ A B }$ ? Draw a diagram.

Hint:

Notice the relationship between $AD$ and $DB$ .

Help:

Remember that the sum of the interior angles of a triangle is always $180°$ .

More Help:

Rely on your trig ratios to solve for the length of the radius.

Answer:

$9.1$ mm