Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books
" Between latitudes 45° and 25° the spherical excess amounts to about 1" for an area of 75.5 square miles. Hence, if the area in square miles be known, a close approximation to the spherical excess will be had by dividing the area by 75.5. "
A Collection of Tables and Formulć Useful in Surveying, Geodesy, and ... - Page 54
by Thomas Jefferson Lee - 1853 - 242 pages
Full view - About this book

A Treatise on Trigonometry, Plane and Spherical: With Its Application to ...

Charles William Hackley - Trigonometry - 1851 - 372 pages
...being known, that of the others may be obtained by the solution of the plane triangle. Between the latitudes 45° and 25° the spherical excess amounts to about 1" for an area of 75*5 square miles. To find the spherical excess in seconds of space therefore divide the area in square...
Full view - About this book

Professional Papers of the Corps of Engineers of the United States Army

United States. Army. Corps of Engineers - Military engineering - 1873
...c s being = — I - - — Between latitudes 45° and 25° the spherical excess amounts to about i" for an area of 75.5 square miles. Hence, if the area...spherical excess will be had by dividing the area by 7S-Slog mean radius of the eanh in yards = 6.8427917 If the three angles of a triangle are assumed...
Full view - About this book

A Text Book on Surveying, Projections, and Portable Instruments.

1876
...of earth, logarithm of mean radius of earth in yards is 6.8427917 Between latitudes of 25° and 45° the spherical excess amounts to about 1" for an area...spherical excess will be had by dividing the area by 75.5 miles. If the three angles are assumed to have been equally well measured, the previous determination...
Full view - About this book

Aide-mémoire for the use of officers of Royal engineers

Anthony Charles Cooke - 1879
...68-198 Dip. n 8 33-4 9 4-54 9 34 11 43 13 31'78 16 34-2 19 8 21 as-r, 30 15'1 42 47 51 23-9 60 30'S — Between latitudes 45° and 25° the spherical excess amounts to about 1' for an area of 75 '5 square miles. Hence, if the area in square miles be known, a close approximation t» tho spherical...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download EPUB
  5. Download PDF