The New American Practical Navigator: Being an Epitome of Navigation ; Containing All the Tables Necessary to be Used with the Nautical Almanac in Determining the Latitude, and the Longitude Y Lunar Observations, and Keeping a Complete Reckoning at Sea ... the Whole Exemplified in a Journal, Kept from Boston to Madeira ... with an Appendix, Containing Methods of Calculating Eclipses of the Sun and Moon, and Occultations of the Fixed StarsE. & G. W. Blunt, 1859 - Nautical astronomy |
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Page xxi
... hypotenuse ; and the other two sides are called legs ; that which stands upright is called the perpendicular , and the other the base ; thus BC is the hypotenuse , AC the perpendicular , and AB the base ; the angles opposite the two ...
... hypotenuse ; and the other two sides are called legs ; that which stands upright is called the perpendicular , and the other the base ; thus BC is the hypotenuse , AC the perpendicular , and AB the base ; the angles opposite the two ...
Page 10
... hypotenuse is equal to the sum of the squares of the two sides . Thus , if BAC be a right - angled triangle , the square of the hypotenuse BC , viz . BCMH , is equal to the sum of the squares made on the two sides , AB and AC , viz . to ...
... hypotenuse is equal to the sum of the squares of the two sides . Thus , if BAC be a right - angled triangle , the square of the hypotenuse BC , viz . BCMH , is equal to the sum of the squares made on the two sides , AB and AC , viz . to ...
Page 11
... hypotenuse ; the square root of the remainder will be the sought leg . Thus , if the hypotenuse was 13 , and one leg was 5 , the other leg would be 12 , for the square of 5 is 25 , and the square of 13 is 169 ; subtracting 25 from 169 ...
... hypotenuse ; the square root of the remainder will be the sought leg . Thus , if the hypotenuse was 13 , and one leg was 5 , the other leg would be 12 , for the square of 5 is 25 , and the square of 13 is 169 ; subtracting 25 from 169 ...
Page 36
... hypotenuse will be the secant of the same angle . FIG . 1 . B FIG . 2 . FIG . 3 . B B Secant FIG . 4 . B Secant 2382 ... hypotenuse AB radius , and upon the centre , A , describe the arc BE , to meet AC produced in E , then it is evident ...
... hypotenuse will be the secant of the same angle . FIG . 1 . B FIG . 2 . FIG . 3 . B B Secant FIG . 4 . B Secant 2382 ... hypotenuse AB radius , and upon the centre , A , describe the arc BE , to meet AC produced in E , then it is evident ...
Page 38
... hypotenuse given , to find the legs . Given the hypotenuse AC 250 leagues , and the angle C , opposite to the side AB , 35 ° 30 , to find the base CB , and perpendicular AB . BY PROJECTION . Draw the base CB of any length ; with an ...
... hypotenuse given , to find the legs . Given the hypotenuse AC 250 leagues , and the angle C , opposite to the side AB , 35 ° 30 , to find the base CB , and perpendicular AB . BY PROJECTION . Draw the base CB of any length ; with an ...
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Common terms and phrases
anchor apparent altitude azimuth cable calculation Cape central index centre chronometer circle column compass Corr correct altitude correct central altitude corresponding Cosec cosine degrees diameter Diff difference of latitude difference of longitude Dist draw east elapsed equal equator error EXAMPLE feet Funchal given Greenwich Half-sum horizon glass horizontal parallax hour angle hypotenuse instrument latitude and departure line of numbers logarithm mean meridian altitude meridional difference method middle latitude miles minutes moon moon's multiplied Nautical Almanac nearly noon object observed altitude obtained parallel Parallel Sailing passing the meridian perpendicular Plane Sailing points polar distance pole quadrant radius 90 refraction right ascension rule screw sea account secant semidiameter sextant ship ship's side sine star subtracted sun's declination Suppose taken tangent telescope traverse table triangle true altitude true distance true longitude variation wind wires zenith distance