.The given information can be represented using the diagram below
The information produces a right triangle as shown above
Applying the rule of trigonometry to get the angle
[tex]\begin{gathered} cosa=\frac{0.6}{2.5} \\ cosa=\frac{6}{25} \end{gathered}[/tex][tex]\begin{gathered} a=cos^{-1}(\frac{6}{25}) \\ a=76.11^0 \end{gathered}[/tex]Hence, the angle of elevation at the foot of the ladder is 76.1⁰
