A Compleat Treatise of Practical Navigation Demonstrated from It's First Principles: Together with All the Necessary Tables. To which are Added, the Useful Theorems of Mensuration, Surveying, and Gauging; with Their Application to Practice. Written for the Use of the Academy in Tower-StreetJ. Brotherton, 1734 - 414 σελίδες |
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Σελίδα 65
... Tang . of half the Sum } 23 --- 1.36173 of the unknown Angles62 ° 45 ' -- 19.28816 to the Tang , of half their Diff . 11 ° , 2 / -- 9.29005 Now having half the Sum and half the Difference of the two unknown Angles C and D , we find the ...
... Tang . of half the Sum } 23 --- 1.36173 of the unknown Angles62 ° 45 ' -- 19.28816 to the Tang , of half their Diff . 11 ° , 2 / -- 9.29005 Now having half the Sum and half the Difference of the two unknown Angles C and D , we find the ...
Σελίδα 239
... Tang . of the Course 42 ° , 33 ' 9.96281 is to the Departure fo is Radius - ❤ 116 2.06446 10.00000 126.4 · 2.10165 · to the proper diff . of Lat equal to 2o , 6 ' , confequently the Ship has come to the Latitude of 52 ° , 30 ' North ...
... Tang . of the Course 42 ° , 33 ' 9.96281 is to the Departure fo is Radius - ❤ 116 2.06446 10.00000 126.4 · 2.10165 · to the proper diff . of Lat equal to 2o , 6 ' , confequently the Ship has come to the Latitude of 52 ° , 30 ' North ...
Σελίδα 245
... Tang . of the Course to min . of diff . of Long . 14 2. Course Sb W Weft , Distance 36 Miles . For Difference of Latitude . As Radius is to the Distance 36 10.00000 1.55630 fo is the Co - fine of the Course 16o , 52 ′ - 9.98090 to the ...
... Tang . of the Course to min . of diff . of Long . 14 2. Course Sb W Weft , Distance 36 Miles . For Difference of Latitude . As Radius is to the Distance 36 10.00000 1.55630 fo is the Co - fine of the Course 16o , 52 ′ - 9.98090 to the ...
Σελίδα 246
... Tang . of the Course to the diff . of Long . 1 10.00000 69.2 · - 1.84011 33 ° , 45 ′ - 9.82489 46.24 · 4. Course SbE , Distance 28 Miles . For Difference of Latitude . 1.66500 As Radius is to the Distance · 28 · 10.00000 1.44716 fo is ...
... Tang . of the Course to the diff . of Long . 1 10.00000 69.2 · - 1.84011 33 ° , 45 ′ - 9.82489 46.24 · 4. Course SbE , Distance 28 Miles . For Difference of Latitude . 1.66500 As Radius is to the Distance · 28 · 10.00000 1.44716 fo is ...
Σελίδα 282
... Tang . of the Sum of the Angles A and B to the Tang . of half their Diff . } 39 ° , 2241 9.91417 3 , 49 8.82309 confequently the Angle A will be 43 ° , 11 ' , and the Angle B 35 ° , 34 ; alfo the Bearing of B from A will be Sb W 1 ...
... Tang . of the Sum of the Angles A and B to the Tang . of half their Diff . } 39 ° , 2241 9.91417 3 , 49 8.82309 confequently the Angle A will be 43 ° , 11 ' , and the Angle B 35 ° , 34 ; alfo the Bearing of B from A will be Sb W 1 ...
Άλλες εκδόσεις - Προβολή όλων
A Compleat Treatise of Practical Navigation Demonstrated From It's First ... Archibald Patoun Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
A Compleat Treatise of Practical Navigation Demonstrated From It's First ... Archibald Patoun Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
A Compleat Treatise of Practical Navigation Demonstrated from It's First ... Archibald Patoun Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Συχνά εμφανιζόμενοι όροι και φράσεις
alfo alſo Altitude anfwering Arch Bafe becauſe Cafe called Center Chord Circle Circumference Co-fine Compaffes confequently Courfe Courſe Courſe and Diſtance Declination defcribe Degrees Dep Lat Departure Diameter Diff Difference of Latitude difference of Longitude Dift Diſtance Diſtance fail'd diurnal Motion Dominical Letter draw Eaft Earth Eaſt Ecliptick equal Equator Example faid fhall fide fince firft firſt fome given greateſt half Horizon Hours Interfection Julian Period Knot laft laſt Lati leaft lefs length Logar Logarithm meaſured Meridian Miles Minutes Moon muft muſt North Number Obfervation oppofite paffing Parallel Parallel Sailing perpendicular Point Pole proper difference Rectangular Trigonometry reprefent Requir'd Required right Angles right Line Rumb Secant Sect Ship's Sine South Sun's Suppofe a Ship Table Tang Tangent thefe theſe thro tis plain Triangle true tude Weft whofe
Δημοφιλή αποσπάσματα
Σελίδα iv - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc.
Σελίδα iv - A diameter of a circle is a straight line drawn through the center and terminated both ways by the circumference, as AC in Fig.
Σελίδα iv - B is an arc, and a right line drawn from one end of an arc to the other is called a chord.
Σελίδα 19 - ... 1 and 6, 2 and 5, 3 and 4, 4 and 3, 5 and 2, 6 and 1 , 5 and 6, or 6 and 5.
Σελίδα 41 - IN a plain triangle, the fum of any two fides is to their difference, as the tangent of half the fum of the angles at the bafe, to the tangent of half their difference.
Σελίδα 39 - In any triangle, the sides are proportional to the sines of the opposite angles, ie. t abc sin A sin B sin C...
Σελίδα ix - KCML, the sum of the two parallelograms or square BCMH ; therefore the sum of the squares on AB and AC is equal to the square on BC.
Σελίδα 5 - AED, is equal to two right angles ; that is, the sum of the angles...
Σελίδα 5 - Thro' C, let CE be drawn parallel to AB ; then since BD cuts the two parallel lines BA, CE ; the angle ECD = B, (by part 3, of the last theo.) and again, since AC cuts the same parallels, the angle ACE = A (by part 2. of the last.) Therefore ECD + ACE = ACD =1 B + AQED THEOREM V. In any triangle ABC, all the three angles taken together are equal to two right angles, viz.
Σελίδα 53 - IT is well known, that the longitude of any place is an arch, of the equator, intercepted between the firft meridian and the meridian of that place ; and that this arch is proportional to the quantity of time that the fun requires to move from the one meridian to the other ; which is at the rate of 24 hours for 360 degrees; one hour for 15 degrees; one minute of time for.