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January 25, 2015

January 25, 2015

Posted by **tom** on Tuesday, December 6, 2011 at 9:24pm.

- MATH -
**Anonymous**, Wednesday, December 7, 2011 at 6:33amAssume the observer started out x feet from the building

tan 20 = h/x

tan 40 = h/(x-75)

.3639 = h/x

.8390 = h/(x-75)

h = .3639x

so

.8390 = .3639x/(x-75)

x = 132.45

h = 48.20

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