What is AB? Preciate y’all

Answer:
Roughly 3.11
Step-by-step explanation:
Side a = 2.38351
Side b = 3.11145
Side c = 2
Angle ∠A = 50° = 0.87266 rad = 5/18π
Angle ∠B = 90° = 1.5708 rad = π/2
Angle ∠C = 40° = 0.69813 rad = 2/9π