Answer: 110 degrees
Explanation:
We know that all the angles of a triangle add to 180 degrees. Notice how there are already 60 and 50 degrees on the triangle. In order to find the last angle, we subtract 110 (60+5) from 180 to get 70.
Now, we know that the angle of a straight line is 180.
So, in order to find <BCD, take 70 and subtract it from 180.
Doing this, we find that m<BCD is 110 degrees