Answer:
the height of the building h= 133.37 m
Explanation:
from the figure,
The angle of incidence of water surface is
[tex]\theta_1= tan^{-1}(\frac{90}{90} )[/tex]
=45°
angle of reflection is
[tex]\theta_2= sin^{-1}(\frac{sin\theta_1n_{water}}{n_{air}} )[/tex]
[tex]\theta_2= sin^{-1}(\frac{sin45°(1.33)}{1} )[/tex]
=70.12°
The height of the building h
[tex]h= \frac{210}{tan70.12\degree}[/tex]
h= 133.37 m
