## A Treatise of Trigonometry: Plane and Spherical, Theoretical and Practical. In which the Several Cases of Plane and Spherical Triangles are Solved, Instrumentally and Arithmetically. ... To which is Added a Correct Table of Logarithms, Sines, Tangents and Secants. By Sam. Heynes, ... |

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A Treatise of Trigonometry: Plane and Spherical, Theoretical and Practical ... Samuel Heynes Ingen forhåndsvisning tilgjengelig - 2018 |

A Treatise of Trigonometry: Plane and Spherical, Theoretical and Practical ... Samuel Heynes Ingen forhåndsvisning tilgjengelig - 2016 |

A Treatise of Trigonometry: Plane and Spherical, Theoretical and Practical ... Samuel Heynes Ingen forhåndsvisning tilgjengelig - 2016 |

### Vanlige uttrykk og setninger

alſo Angular point anſwering Arch Arcs Baſe becauſe Caſe Center Co-fine Compaſſes conſequently Croſs Degreer Demonſtration deſcribe Diameter Diff diſtance draw the Line E X A M P L firſt Hypothenuſe inſtance Io.co Io.o Io.oo Io.or laſt Legs leſs leſſer likewiſe Line drawn Line of Chords Line of Meaſures Logarithm muſt Number Oblique Circle obſerve oppoſite P R O Parallel paſs Perpendicular Plane Plate Pole Primitive Circle Prob Projećtion Proportions Propoſition Quadrant Radius reaſon Repreſentation repreſents Right Angles Right Circle Right-line Ruler laid ſame ſecond Sečtion ſeveral ſhall ſhew Sides ſince Sine Spheric Triangle Spherical Angle Stereog Subſt ſuch ſuppoſe Tang Tangents and Secants theſe thoſe Tropic of Cancer uſe Vertex whoſe

### Populære avsnitt

Side 9 - Secants, and are to be taken out of your Table. To find a Side, any Side may be made Radius : Then fay, As the Name of the Side given, Is to the Name of the Side required ; So is the Side given, To the Side required. But to find an Angle, one of the given Sides...

Side 2 - Calculation, if, fuppofing the Radius divided into any Number of equal Parts, we know how many of thofe equal Parts are in the Sine, Tangent, or Secant of any Arch propos'd: The Art of inferring which is called Trigonometry, and it is either Plane or Spherical.

Side 1 - Diameter pafling thro' the other End ; or it is half the Chord of twice the Arch ; fo BF is the Sine of the Arches BA, BD. And here it is evident, that the Sine of 90...

Side 10 - But to find an angle, one of the given sides must be made radius: then, as the side made radius is to the other side ; so is the name of the...

Side 28 - DAG, that is, the half of BAC : but HA is half the perimeter of the triangle ABC, and AD is the excess of the same above HD, that is, above the base BC...

Side 69 - The first shows that, the sum of the sines of two arcs is to the difference of those sines, as the tangent of half the sum of the arcs is to the tangent of half their difference.

Side 52 - In spherical triangles, whether right angled or oblique angled, the sines of the sides are proportional to the sines of the angles opposite to them.

Side 28 - ... so is the square of the radius to the square of the sine of half their contained angle, as shown in Leslie's Geometry.

Side 48 - BD ; the co-fine of the angle B will be to the co-fine of the angle D, as the fine of the angle BCA to the fine of the angle DCA. For by 22. the co-fine of the angle B is to the fine of the angle...

Side 9 - Solution of Right-angled Triangles, obferve, that as different Sides are made Radius, fo the other Sides acquire different Names, which Names are either Sines, Tangents, or Secants, and are to be taken out of your Table, To find a Side, any Side may be made Radius : Then fay, as the Name of the Side given is to the Name of the Side required ; fo is the Side given to the Side required.