A 43mwide swimming pool is filled to the top The bottom of t

A 4.3-m-wide swimming pool is filled to the top. The bottom of the pool becomes completely shaded in the afternoon when the sun is 25 above the horizon.

How deep is the pool? (in meters)

Solution

using snell\'s law to find refraction angle,

ni sini = nr sinr

1 * sin(90-25) = 1.33 sinr

r = 42.96 deg

tan42.96 = 4.3 / d

d = 4.62 m