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 74
Make BC rr 707, and on B erect the perpen-dicular BA, which make equal to 890 ; join AC,and it is done ; for the angle C will be 519 32;confequently, the angle A 380 z%f, and the hypot-enufe 1137. 707 * When you uke the log, fme« or tangents to the nearcft minmc only, it ii bell to life (hi? canon… … 6B OBLIQUE TRIGONOMETRY, By LOGARITHMS.By making the bafe radius, it will be, To find the angle C.As the bafe 70; 2.84942 Is to radius 10.00000 Soi? the perpend. S90 2.94939 To find the hypoth. AC*As radius io.oooodi Is to the bafe 707 2.84943 So is fee. ang. C 510 32 10.20617 To tan.ang, C™;i° 32/…
Navigation · Nautical astronomy
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