In the circle below, db = 22 cm, and m< dbc = 60°. find bc. ignore my handwriting.

Step-by-step explanation:

step 1

Find the measure of the arc DC

we know that

The inscribed angle measures half of the arc comprising

substitute the values

step 2

Find the measure of arc BC

we know that

----> because the diameter BD divide the circle into two equal parts

step 3

Find the measure of angle BDC

we know that

The inscribed angle measures half of the arc comprising

substitute the values

therefore

The triangle DBC is a right triangle ---> 60°-30°-90°

step 4

Find the measure of BC

we know that

In the right triangle DBC

substitute the values

c: lkllmn.

hope it's you