First, find angle ECD using tan^-1(6/4), we get angle as 56.31
Now by proportionate, angle ECD and angle EBA are equal.
Hence you can use tan to find AB i.e, AB = 18/tan(56.31)= 12
Therefore, AB = 12
Answer: 151 is the answer so a
Step-by-step
Answer:
30
Step-by-step explanation:
30 * 2 is 60
60 - 10 is 50