A person is standing at the edge of the water and looking out at the ocean (see figure). The height of the person's eyes above the water is $h = 1.9 \text{ m}$, and the radius of the Earth is $R = 6.38 \times 10^6 \text{ m}$.
(a) How far is it to the horizon? In other words, what is the distance $d$ from the person's eyes to the horizon? (Note: At the horizon the angle between the line of sight and the radius of the earth is $90^\circ$.)
(b) Express this distance in miles.
(a) Number
6957.78
Units
m
(b) Number
4.323
Units
mi