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 7
... Degrees as the Arch is ; fo if the Arch AD be 45 Degrees , then the Angle ABD is faid to be an Angle of 45 De- grees . Hence Angles are greater or lefs according as the Arch defcribed about the angular Point , and terminated by the two ...
... Degrees as the Arch is ; fo if the Arch AD be 45 Degrees , then the Angle ABD is faid to be an Angle of 45 De- grees . Hence Angles are greater or lefs according as the Arch defcribed about the angular Point , and terminated by the two ...
Σελίδα 14
... Degrees , the Remainder will be the Sum of the other two . Thus ( in the former Triangle ABC ) if the Angle ABC be 40 Degrees , by taking 40 from 180 we have 140 Degrees ; which is the Sum of the two Angles BAC , ACB , the converse of ...
... Degrees , the Remainder will be the Sum of the other two . Thus ( in the former Triangle ABC ) if the Angle ABC be 40 Degrees , by taking 40 from 180 we have 140 Degrees ; which is the Sum of the two Angles BAC , ACB , the converse of ...
Σελίδα 30
... Degrees in the foot of the Page , and the Sines , Tangents , and Secants , anfwering to thefe Degrees and Minutes , are in the Columns mark'd at the bottom with the Words , Sine , Tangent , Secant ; the Degrees in the top Column ...
... Degrees in the foot of the Page , and the Sines , Tangents , and Secants , anfwering to thefe Degrees and Minutes , are in the Columns mark'd at the bottom with the Words , Sine , Tangent , Secant ; the Degrees in the top Column ...
Σελίδα 32
... degrees , then drawing the Chord AB , I fay AB fhall be equal to the Radius CB or AC ; for in the Triangle ACB , the Angle ACB is 60 degrees , being measured by the Arch AEB ; therefore the Sum of the other two Angles is 120 degrees ...
... degrees , then drawing the Chord AB , I fay AB fhall be equal to the Radius CB or AC ; for in the Triangle ACB , the Angle ACB is 60 degrees , being measured by the Arch AEB ; therefore the Sum of the other two Angles is 120 degrees ...
Σελίδα 38
... Degrees , fup- pofe 45 . Rule . Let the given line A B be produced , then take off your Scale the length of the Chord of 60 Degrees , which is equal to the Radius of the Circle the Scale was made for ( by Art . 73. ) And fetting one ...
... Degrees , fup- pofe 45 . Rule . Let the given line A B be produced , then take off your Scale the length of the Chord of 60 Degrees , which is equal to the Radius of the Circle the Scale was made for ( by Art . 73. ) And fetting one ...
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
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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.