An introduction to the theory ... of plane and spherical trigonometry ... including the theory of navigation1839 |
Inni boken
Resultat 1-5 av 91
Side vii
... three sides of a spherical triangle are given , to find an angle . In Prop ... angles ; the demonstration , which is purely algebraical , is complicated ... THREE DISTINCT TREATISES , which are all essential towards his future progress in ...
... three sides of a spherical triangle are given , to find an angle . In Prop ... angles ; the demonstration , which is purely algebraical , is complicated ... THREE DISTINCT TREATISES , which are all essential towards his future progress in ...
Side xxviii
... three angles of a spherical triangle above two right angles . 366 · 5. To reduce the angles of a spherical triangle ( whose sides are very small arcs ) to those of a rectilineal triangle , having its sides of equal length with the sides ...
... three angles of a spherical triangle above two right angles . 366 · 5. To reduce the angles of a spherical triangle ( whose sides are very small arcs ) to those of a rectilineal triangle , having its sides of equal length with the sides ...
Side 22
... three sides , or " a side having three angles of a spherical triangle given . " He then gives the following proportions : As radius Is to sine of one of the sides containing any angle , so is the sine of the other containing side ...
... three sides , or " a side having three angles of a spherical triangle given . " He then gives the following proportions : As radius Is to sine of one of the sides containing any angle , so is the sine of the other containing side ...
Side 25
... three letters , as ABC , the middle letter always stands at the angular point , and the other two letters at the ... angles are measured by the number of degrees cut from the circle by the lines which form the angles ; thus , if the arc ...
... three letters , as ABC , the middle letter always stands at the angular point , and the other two letters at the ... angles are measured by the number of degrees cut from the circle by the lines which form the angles ; thus , if the arc ...
Side 27
... three straight lines , and contains three angles . ( 66 ) Triangles are of various kinds , but in trigonometry only two kinds are considered , viz . right - angled triangles , and oblique - angled triangles ; which indeed include the ...
... three straight lines , and contains three angles . ( 66 ) Triangles are of various kinds , but in trigonometry only two kinds are considered , viz . right - angled triangles , and oblique - angled triangles ; which indeed include the ...
Vanlige uttrykk og setninger
acute altitude angle CAB arc BF base centre complement construction cosec cosine cotangent degrees diff difference of latitude distance division draw ecliptic equator Euclid extent will reach find the angle formulæ given angle given side greater Greenwich half the sum Hence horizon hypoth less line of numbers line of sines logarithm logarithmic sine mean arc measure meridian moon's natural number Nautical Almanac observed obtuse opposite angles parallax parallel perpendicular plane sailing Plate pole primitive PROPOSITION quadrant rad2 radius rhumb line right angles right ascension right-angled plane triangle right-angled spherical triangle right-angled triangle RULE scale of chords scale of equal SCHOLIUM secant semi-tangents side AC side opposite sin² sphere spherical angle spherical triangle ABC spherical trigonometry straight line subtract supplement Tang tangent of half three angles three sides Trigonometry versed sine
Populære avsnitt
Side 109 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Side 141 - Consequently, a line drawn from the vertex of an isosceles triangle to the middle of the base, bisects the vertical angle, and is perpendicular to the base.
Side 33 - An angle at the circumference of a circle is measured by half the arc that subtends it. Let BAC be an angle at the circumference : it has for its measure half the arc "BC, which subtends it.
Side 29 - The sine, or right sine, of an arc, is the line drawn from one extremity of the arc, perpendicular to the diameter passing through the other extremity. Thus, BF is the sine of the arc AB, or of the arc BDE.
Side 258 - The HORIZON is a great circle which separates the visible half of the heavens from the invisible ; the earth being considered as a point in the centre of the sphere of the fixed stars.
Side 116 - C = sin. A sin. B sin. C; dividing both sides of this equation by cos. A cos. B cos. C, we have sin. A sin. B sin. C _ sin.
Side 362 - Now it is plain, that if any great circle of the sphere (as 1, 2, 3.) be divided into any number of equal parts, and through the points of division...
Side 23 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Side 330 - Method of correcting the apparent distance of the Moon from the Sun, or a Star, for the effects of Parallax and Refraction.