Answer: 5 / 12
Step-by-step explanation:
1) The function ratio tangent is defined as opposite-leg / adjacent leg:
tan(x) = opposite-leg / adjacent leg
2) In the figure the legs related to angle A are:
- opposite-leg: BC = 20
- adjacent-leg: AC = 48
3) Therefore, tan(A) = 20 / 48 = 5 / 12