The given triangle is a right triangle. Considering angle A as the reference angle,
opposite side = BC = 11.9
adjacent side = AC = 10
We would find θ by applying the tangent trigonometric ratio which is expressed as
Tan θ = opposite side/adjacent side
By substituting the values into the formula, we have
tanθ = 11.9/10 = 1.19
We would find θ by finding the tan inverse of 1.19. Thus,
θ = Tan^-1(1.19)
θ = 49.96 degrees