Thursday
May 5, 2016

# Homework Help: trig, Phoenix College

Posted by Jama on Monday, March 21, 2011 at 10:59pm.

Where did the number 0.5736 come from or originated from?

Will the horizon be closer or farther away when your eyes are closer to the surface?

Will the horizon be closer or farther away when your eyes are farther from the surface?
• trig, Phoenix College - tchrwill, Friday, March 25, 2011 at 11:00am

Therefore, to determine how far in miles we can see from a building of height h ft., we use d = sqrt[1.5h].
To determine the height of a building we can see from a distance d off shore, we use h = sqrt(r^2 + d^2) - r, r and d in feet.

A sampling of some values:

h in feet....6......10.......25.......100......1000......5000....10,000......29,000.......528,000(100miles)
d in miles.2.45.3.87....6.12....12.25....38.75......86.6.....122.5........208.5............890

d in miles.1........5.......10........25.........50.........75........100..........200.............1000
h in feet..2/3...16.66....66.66..416.66..1666.66...3750....6666.66..26,666.66......666,666(126.25miles)