American practical navigator: an epitome of navigation and nautical astronomy (1914)
Bowditch, Nathaniel, 1773-1838, Logan, George Wood, 1868-1915, United States. Navy Dept. Bureau of Equipment · Washington, Govt. Print. Off · leaf 279
= £ b X h. Area of any right-lined figure = sum of the areas of the triangles into which it is divided. Sum of three angles of any triangle = 180°. Circumference of circle = 2?rr, or ltd. Tfd2Area of circle = nr*, or -7-. Angle subtended by arc equal to radius = 57°.29578. ird?Volume of sphere =… … -, or Pe c h rpendicularypotenuse .g TRIGONOMETRIC FUNCTIONS. The trigonometric functions of the angle formed by any two linesare the ratios existing between the sides of a right triangle formed byletting fall a perpendicular from any point in one line upon theother line; no matter what point is…
Navigation · Nautical astronomy
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