Precalculus
posted by Mojo .
A woman standing on a hill sees a flagpole that she knows to be 60 ft tall. the angle of depression to the bottom of the pole is 14 degrees and the angle of elevation to the top of the pole is 18 degrees. find her horizontal distance to the flagpole.

make a diagram, draw a horizontal line to the pole, let the top part of the pole be x,
then the bottom part of the pole is 60x
call the horizontal distance to the pole = y
tan 18° = x/y
x = ytan18
tan 14 = (60x)/y
60x = ytan14
x = 60  ytan14
ytan18 = 60ytan14
ytan18  ytan14 = 60
y(tan18  tan14) = 60
y = 60/(tan18°  tan14°)
= ...
I will let you do the buttonpushing. 
y= 60/(tan 18 + tan 14)
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