The Projection and Calculation of the Sphere for Young Sea Officers Being a Complete Initiation Into Nautical AstronomyLongmans, Green, 1861 - 112 sider |
Inni boken
Resultat 1-5 av 15
Side 5
... cosine of its meridian . Every nautical astronomer , therefore , will do well to have a scale prepared for general use , similar to the one at Fig . 3. It is formed by making the lines B C and B A meet at any angle ( the nearer 90 ° the ...
... cosine of its meridian . Every nautical astronomer , therefore , will do well to have a scale prepared for general use , similar to the one at Fig . 3. It is formed by making the lines B C and B A meet at any angle ( the nearer 90 ° the ...
Side 7
... cosine of latitude in which the degree of longitude is situated . For example : -Required the length in measured nautical miles of a degree of longitude in latitude 50 ° . In Fig . 5 , making hypothenuse radius , we have ( by plane ...
... cosine of latitude in which the degree of longitude is situated . For example : -Required the length in measured nautical miles of a degree of longitude in latitude 50 ° . In Fig . 5 , making hypothenuse radius , we have ( by plane ...
Side 11
... cosine , or sine of an △ which is com- plementary to another , or required to make up 90 ° . Thus DE is the sine of the arc EB , and FE is the sine of arc EH , which is the complement of EB ( for HE + EB = 90 ° ) . Therefore FE is ...
... cosine , or sine of an △ which is com- plementary to another , or required to make up 90 ° . Thus DE is the sine of the arc EB , and FE is the sine of arc EH , which is the complement of EB ( for HE + EB = 90 ° ) . Therefore FE is ...
Side 13
... cosine = CN CP 15. Therefore , in works on logarithms , when we want the secant of an angle we can find it by subtracting its cosine from 20 ( the diameter of a circle whose radius is 10 ) , and to find the log sine we subtract the log ...
... cosine = CN CP 15. Therefore , in works on logarithms , when we want the secant of an angle we can find it by subtracting its cosine from 20 ( the diameter of a circle whose radius is 10 ) , and to find the log sine we subtract the log ...
Side 14
... cosine = Cosec sec 1 1 tang = cot = cot tang 1 1 sec = cosec = cosine sine N.B. - The unit here meaning 1 diameter = 2 radii each of 10 , or diameter = 20 . 16. This , however , which forms the elementary base of a proper knowledge of ...
... cosine = Cosec sec 1 1 tang = cot = cot tang 1 1 sec = cosec = cosine sine N.B. - The unit here meaning 1 diameter = 2 radii each of 10 , or diameter = 20 . 16. This , however , which forms the elementary base of a proper knowledge of ...
Andre utgaver - Vis alle
The Projection and Calculation of the Sphere for Young Sea Officers Being a ... S. M. Saxby Uten tilgangsbegrensning - 1861 |
The Projection and Calculation of the Sphere for Young Sea Officers Being a ... S. M. Saxby Uten tilgangsbegrensning - 1861 |
The Projection and Calculation of the Sphere for Young Sea Officers S M Saxby Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
azimuth circle calculation called centre circle by Prob complement construction contained angle cosine cotang declination 20 diff 2 sides draw an oblique Draw diameters Draw the parallel equal equator Euclid example extr conjunct extr disjunct figure Find side formulæ given side gnomonic projection half diff half sum half the difference half the sum horizon hour angle hour circle hypothenuse intersection latitude log sine log tang logarithms meridian meridian altitude Natural Numbers nautical astronomy navigator oblique circle opposite angle parallel of declination perpendicular plane projection radius right angles rule of sines scale of chords scale of semi-tangents secant side 70 side ZP sine diff sine of half sine of middle sine side BC sines 78 small circle sphere spheric angles spheric triangle SPHERIC TRIGONOMETRY stereographic projection sun's place tangent trigonometry vulgar fraction zenith وو وو
Populære avsnitt
Side 16 - The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles.
Side 18 - IN a right-angled triangle, if a perpendicular be drawn from the right angle to the base, the triangles on each side of it are similar to the whole triangle, and to one another.
Side 16 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Side 17 - IF two straight lines cut one another, the vertical, or opposite, angles shall be equal.
Side 20 - IF a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles ; and the three interior angles of every triangle are equal to two right angles.
Side 18 - The greater angle of every triangle is subtended by the greater side, or has the greater side opposite to it.
Side 19 - The angle at the centre of a circle is double of the angle at the circumference, upon the same base, that is, upon the same part of the circumference.
Side 60 - As any one side, Is to the sine of its opposite angle ; So is any other side, To the sine of its opposite angle.
Side 82 - The sine of half the sum of two angles of a spherical triangle is 'to the sine of half their difference as the tangent of half the included side is to the tangent of half the difference of the other two sides.