Question

please do by step by step explanation


otherwise I will report the qution ​

Answer 1

3:1 is the answer but in option it is not present.

Step-by-step explanation:

first find A .

angle A + angleB + angle C = 180° (sum of all angles)

angle A + 90° + 30° = 180°

angle A = 180° - 120°

angle A = 60°

AB :AC = 60° × 90° : 60°×30°

= 5400: 1800

= 3:1