Tables of Logarithms of Numbers and of Sines and Tangents for Every Ten Seconds of the Quadrant: With Other Useful TablesHarper & brothers, 1859 - 150 pages |
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Page 6
... Examples of Right - angled Triangles Oblique - angled Spherical Triangles . Examples of Oblique - angled Triangles Trigonometrical Formulæ Sailing on an Arc of a Great Circle 155 158 160 163 165 171 176 TRIGONOMETRY . BOOK I. THE NATURE ...
... Examples of Right - angled Triangles Oblique - angled Spherical Triangles . Examples of Oblique - angled Triangles Trigonometrical Formulæ Sailing on an Arc of a Great Circle 155 158 160 163 165 171 176 TRIGONOMETRY . BOOK I. THE NATURE ...
Page 13
... EXAMPLES . The logarithm of 345.6 is 2.538574 ; 66 ( 6 87.65 is 1.942752 ; 66 66 2.345 is 0.370143 ; 66 66 .1234 is 1.091315 ; 66 66 .005678 is 3.754195 . To find the Logarithm of a Vulgar Fraction . ( 9. ) We may reduce the vulgar ...
... EXAMPLES . The logarithm of 345.6 is 2.538574 ; 66 ( 6 87.65 is 1.942752 ; 66 66 2.345 is 0.370143 ; 66 66 .1234 is 1.091315 ; 66 66 .005678 is 3.754195 . To find the Logarithm of a Vulgar Fraction . ( 9. ) We may reduce the vulgar ...
Page 34
... examples . both by natural numbers and by logarithms , until he has made himself perfectly familiar with both methods . He may then employ either method , as may appear to him most expeditious . CASE II . ( 45. ) Given the hypothenuse ...
... examples . both by natural numbers and by logarithms , until he has made himself perfectly familiar with both methods . He may then employ either method , as may appear to him most expeditious . CASE II . ( 45. ) Given the hypothenuse ...
Page 36
... Examples for Practice . 1. Given the base 777 , and perpendicular 345 , to find the hypothenuse and angles . This example , it will be seen , falls under Case IV . 2. Given the hypothenuse 324 , and the angle at the base 48 ° 17 ' , to ...
... Examples for Practice . 1. Given the base 777 , and perpendicular 345 , to find the hypothenuse and angles . This example , it will be seen , falls under Case IV . 2. Given the hypothenuse 324 , and the angle at the base 48 ° 17 ' , to ...
Page 41
... example there is no ambiguity , because the giver . angle is obtuse . CASE III . ( 55. ) Given two sides and the included angle , to find the third side and the remaining angles . The sum of the required angles is found by subtracting ...
... example there is no ambiguity , because the giver . angle is obtuse . CASE III . ( 55. ) Given two sides and the included angle , to find the third side and the remaining angles . The sum of the required angles is found by subtracting ...
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Common terms and phrases
9 I I altitude angle of elevation arithm base chains circle Co-sine Co-tangent complement computed correction cosecant course and distance decimal diameter diff difference of latitude difference of longitude Dist divided equal equator fifth figure find the angles find the area find the Logarithm frustum given number given the angle height Hence horizontal plane hypothenuse inches latitude and departure length LO LO LO logarithmic sine measured meridian middle latitude miles minutes Multiply natural number nautical miles parallel parallel sailing perpendicular places plane sailing Prob Prop proportional quadrant radius Required the logarithmic right-angled spherical triangle right-angled triangle Sandy Hook secant ship sails side AC spherical triangle ABC SPHERICAL TRIGONOMETRY station subtract surface tabular number tang Tangent telescope theodolite Theorem vernier vertical Vulgar Fraction wyll yards zoids ΙΙ ΙΟ
Popular passages
Page 20 - The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc.
Page 163 - In any spherical triangle, the sines of the sides are proportional to the sines of the opposite angles. In the case of right-angled spherical triangles, this proposition has already been demonstrated.
Page 69 - FIND the area of the sector having the same arc with the segment, by the last problem. Find also the area of the triangle, formed by the chord of the segment and the two radii of the sector.
Page 54 - 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.
Page 69 - TO THE NUMBER OF DEGREES IN THE ARC ; So IS THE AREA OF THE CIRCLE, TO THE AREA OF THE SECTOR.
Page 73 - To find the solidity of a pyramid. RULE. Multiply the area of the base by one third of the altitude.
Page vi - The characteristic of the logarithm of ANY NUMBER GREATER THAN UNITY, is one less than the number of integral figures in the given number.
Page 184 - If a heavy sphere, whose diameter is 4 inches, be let fall into a conical glass, full of water, whose diameter is 5, and altitude 6 inches ; it is required to determine how much water will run over ? AHS.