Lab 05: navigation: tangents and mount Everest

Tangent method:
measure a distance from the object (huge tape measure can be useful here)
measure the degrees you see in your astrolabe to the top of the object
use the tangent calculator on your phone: tan = opposite (height)/adjacent (distance)
you could also use: distance x tangent θ = height
make sure to add your eye height
use this method to determine the altitude of the same objects
try to calculate the altitude of Mauna Kea by looking up the distance, knowing the elab is at 800 meters altitude (confirm this with the GPS on your phone)
using google earth, look up the distance between several peaks on your map and make a scale ruler for your map
use this scale ruler to find the distance to other peaks
repeat the tangent method to find the height of each peak you can see: Hokuula, La'e La'e, Mauna loa...Questions:
who measured the height of mount Everest?
how did he/she do it?
why do you need to know the elevation of your observation?
if you measure Mauna Loa as 5 degrees and it is 60 km away, what altitude above sea level is Mauna Loa?
Look up the true altitude and calculate your error
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