#### Answer

$36^{\circ}$

#### Work Step by Step

The trigonometric ratios are as follows:
$ \tan \theta =\dfrac{opposite}{adjacent}$
We need to use a scientific calculator and press the inverse tangent function $\tan^{-1}$
Suppose $\tan \theta =\dfrac{125}{172}$
This gives: $ \theta \approx 36^{\circ}$
So, the angle of elevation of the sun is approximately $36^{\circ}$