H E I G HT S.* PROBLEM I. To ascertain the height of an inaccessible object. ... the base of the A object, as nearly equal as possible to the height, and take the angle of elevation by the theodo- \ | lite. ... ExAMPLE 1.aWhat is the height of a tower, whose top, at the distance of 5 chains 75 links, subtends an angle of 33Ad 17a#39;?
|Title||:||A Treatise on Land Surveying and Levelling, illustrated by copious field notes, plans, and diagrams ... With ... an appendix of tables of logarithms, etc|