An introduction to the theory ... of plane and spherical trigonometry ... including the theory of navigation1839 |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 29.
Σελίδα xii
... extent than those by Dr. Newton have been published , as the Tables of Hobert and Ideler , printed at Berlin , in the year 1799 ; the tables of Borda , printed at Paris , an IX , with a preface by Delambre , & c . The advantages of this ...
... extent than those by Dr. Newton have been published , as the Tables of Hobert and Ideler , printed at Berlin , in the year 1799 ; the tables of Borda , printed at Paris , an IX , with a preface by Delambre , & c . The advantages of this ...
Σελίδα 3
... extent of our best modern tables . 10 If 10 ** = 2 , then x = 0.30103 the log . of 2 . If 10 * = 3 , then x = 0 · 47712 the log . of 3 . If 10 * = 4 , then x = 0 · 60206 the log . of 4 . If 10 If 10 50 , then x = 1 · 69897 the log . of ...
... extent of our best modern tables . 10 If 10 ** = 2 , then x = 0.30103 the log . of 2 . If 10 * = 3 , then x = 0 · 47712 the log . of 3 . If 10 * = 4 , then x = 0 · 60206 the log . of 4 . If 10 If 10 50 , then x = 1 · 69897 the log . of ...
Σελίδα 20
... extent from the brass pin on the scale of meridional parts to any division on that scale , applied to the line of equal parts , will give ( in degrees ) the meridional parts answering to the latitude of that division . Or the extent ...
... extent from the brass pin on the scale of meridional parts to any division on that scale , applied to the line of equal parts , will give ( in degrees ) the meridional parts answering to the latitude of that division . Or the extent ...
Σελίδα 22
... extent applied the same way will reach from the sine of the other side to a fourth sine . From this fourth sine extend the compasses to the sine of half the sum of the three sides , and this extent applied the same way will reach from ...
... extent applied the same way will reach from the sine of the other side to a fourth sine . From this fourth sine extend the compasses to the sine of half the sum of the three sides , and this extent applied the same way will reach from ...
Σελίδα 23
... example , wherein the three sides of a spherical triangle are given to find an angle . ( 49 ) GENERAL RULE . The extent of the C 4 CHAP . IV . 23 ON GUNTER'S SCALE . The use of the logarithmic lines on GUNTER's scale.
... example , wherein the three sides of a spherical triangle are given to find an angle . ( 49 ) GENERAL RULE . The extent of the C 4 CHAP . IV . 23 ON GUNTER'S SCALE . The use of the logarithmic lines on GUNTER's scale.
Συχνά εμφανιζόμενοι όροι και φράσεις
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
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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.
Σελίδα 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...
Σελίδα 23 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees...
Σελίδα 330 - Method of correcting the apparent distance of the Moon from the Sun, or a Star, for the effects of Parallax and Refraction.