Respuesta :

[tex]\tan \angle B = \dfrac{AC}{BC} \\\\\implies \angle B = \tan^{-1} \left(\dfrac{AC}{BC} \right) = \tan^{-1}\left(\dfrac 56 \right)=39.81^{\circ}[/tex]

0.83
tan = opp / adj
tan = 5 / 6
5/6 ≈ 0.83