Question

I need help on 7,8,9

Answer 1

Answer: 7. 120 degrees

8. DB=8

9. 110 degrees

Explanation:

7. 240/2=120 degrees

8. 2+3=5

(5^2-3^2)^1/2=DB/2

16^1/2=DB/2

4=DB/2

DB=8

9. 90+50=140

360-140=220

220/2=110 degrees