The new American practical navigator : being an epitome of navigation, containing all the tables necessary ... (1802)
Bowditch, Nathaniel, 1773-1838, Lee, Marvin, former owner. DSI, Stuart, Gilbert, 1755-1828 DSI, Burndy Library, donor. DSI · [Salem] : Printed at Newburyport, Mass., 1802, by Edmund M. Blunt, for Cushing and Appleton, Salem : Sold by every book-seller, ship- chandler, and mathematical-instrument-maker in the United States and West Indies · leaf 42
; therefore (byArt. 35.) the angle DAH is equal to DEB, and (by Art. 32.) the angleABE is equal to BAH, and fince AF is perpendicular to EB, the tri-angles AHD, AFE, are fimilar, and AF is equal to HB. Moreoverfince C B is equal to C D or C E; A D is the fum and A E is the difference
Navigation · Nautical astronomy
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