Math Help - distance to the horizon

1. distance to the horizon

From the top of Mt. Washington, which is 6288 feet above sea level, how far is it to the horizon? Assume that the Earth has a 3960-mile radius(one mile is 5280 feet) and give your answer to the nearest mile.

Hmm...I was trying to use trig..

2. Re: distance to the horizon

Yes, but it can be useful to make a drawing. Did you do that?

3. Re: distance to the horizon

... but then there is refraction. The geometric horizon is not the circle where the sky and earth meet.

CB