The American practical navigator : being an epitome of navigation and nautical astronomy (1888)
Bowditch, Nathaniel, 1773-1838, United States. Navy Dept. Bureau of Navigation, Cooper, Philip Henry, 1844-1912 · Washington : Govt. Print. Off. · leaf 686
: by Gunters Scale, bythe sliding scale, by the sector, by con-struction, and by computation. The lat-ter, being by far the most accurate, willonly be described hce. Solution by theother methods may be readily understoodthrough the descriptions given of the in-struments named in Chap. II, Part I.… … sides opposite the angles A and 1!. 640 PLANE TRIGONOMETRY. Then a c b or perpendicular^ j^ ^^jj^^ ^^^ ^.^^ ^^^^^^ ^hypotenuse or base , is called the cosine of angle A. or hypotenuse perpendicular^ j^ ^^jj^^ ^j^^ ^a«_^^«/ of the angle A.base or base perpendicular is called the cotangent of the…
Navigation · Nautical astronomy
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