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Trigonometry, surveying and navigation (1903)

Wentworth, G. A. (George Albert), 1835-1906 · Boston, Ginn & company · leaf 307

An illustration from Trigonometry, surveying and navigation, 1903, leaf 307
= N. 29° 30 E. 33° 45 R. of N.11° 15 R. 45° 0 R. of N. 10° 0 L. 35° 0 R. of N. 5° 30 L. SOLUTION BY DIAGRAM The solutions of Examples 1, 2, and 3 are clearly shown by referringto Fig. 4. T.N. is geographical north (True North). M.N. is direction of needle by variation (Magnetic North). C.N. is… … ^fe; %> N*. T.E T.W- fo •T.E. Fig. 4 Hence, in Example 1, the required course is evidently the angle formedby the two lines T.N. and T.C. In Example 2, the required course is evidently the angle formed by thetwo lines T.N. and T.C. In Example 3, the required course is evidently the angle formed…

Trigonometry · Surveying · Navigation

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