11% or 3/9 should be right. Hope it helps :)
Do them backwards and you will get the answer
Answer:
As law of sin:
CD/sinE = DE/sinC
Then
12/sin83 = 5/sinC
Then
sinC = 5*sin83/12 = 0.413
Then
C = arcsin(0.413) = ~24.4 deg
Then
D = 180-C-E = 180-83-24.4 = ~72.6
Hope this help, bro!
Hey there Rosy! I did this recently and the answer is:
1 : 4
2 to 8
18
---
72
