4
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After some searching I found:

  • Triangulation
  • Using theta and "b" to find out the height of a building.

Thanks in advance.

  • 1
    The second one you mention is more properly known as "shadow reckoning". :)2010-10-20
  • 1
    I feel like this question would be better asked to architects than mathematicians. (I certainly don't know anything about actual architecture.)2010-10-20
  • 1
    Architects use CAD software. You can be sure trigonometry is used all over the pace when writing such software!2010-10-20
  • 0
    @Qiaochu sadly though, there's no Architecture stackexchange site2010-10-21

1 Answers 1