I think it’s between the first and third one
Having The Lack Of Information, We Can Only Give You An Equation.
So:
Quotient = Division.
R / 12 Is The Equation.
(If This Is Not What You Need, Put In More Info, And I Can Solve It. ;) <span />
Use the table of trigonometric ratios /in a picture/.
Answer: m∠A ≈ 70°