Respuesta :

using trigonometric ratio,

let

the unknown angle = x degrees

[tex]\tan x=\frac{opposite}{\text{adjacent}}[/tex][tex]\begin{gathered} \tan x=\frac{13}{16}^{} \\ x=\tan ^{-1}0.8125 \\ x=39.0938588862 \\ x\approx39^{\circ} \end{gathered}[/tex]