Davies, Charles, 1798-1876 · New York, Cincinnati [etc.] American book company · leaf 124
courses. L = total latitude, and Z> =: total departure of the two un-measured courses, obtained by comput-ing the total latitudes and total departuresof the measured courses, UK to PF, as in Art. 142. Let X = length of the first course. y =z length of the second course. We shall then have, L =… … Fig 77. (1) (3) X cos ^—sin A cot BMultiply both numerator and denominator by sin B, • Prot H. 8. Manroe. E.M., Ph.D., and J. Woodbridge Davbs, C.E., Ph.D., In School ofMinee Quarterly, for November, 1881. Ifc 118 ELEMENTS OF SURVEYING. [book III. X = L siu B—D COS Bsm {A—B) or, substituting for…
Surveying
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