The angle of elevation
= Tan θ = oppadj\frac{\text{opp}}{\text{adj}}adjopp
Tan θ = 12−1.410\frac{12-1.4}{10}1012−1.4
Tan θ = 10.610\frac{10.6}{10}1010.6
θ = Tan−1^{-1}−1(1.06)
θ ≈ 47º
