You are in error again.

The calculation would be based on a triangle, one length is earth
radius, the other, earth radius plus tower height. The third length is
the geometric distance from tower top to earth horizon.


Oh, be sure to square (that means multiply it by itself) the two known
lengths, subtract one (earth radius squared) from the other (earth
radius plus tower heigth squared), and extract the sqare root.

Be sure to use consistant units: you do know there are 5280 feet in a
mile, don't you?

What part don't YOU understand?



.
On Jan 3, 5:57*pm, Mxsmanic wrote:
Tina writes:
The question not answered, assuming both a spherical cow and a round
smooth earth with no atmosphere, is how you, using right triangles,
know the distance to the horizon.

I've given an explanation. *What part don't you understand?