Tables of Logarithms of Numbers and of Sines and Tangents for Every Ten Seconds of the Quadrant: With Other Useful Tables |
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Page 93
... bearing of AB from the point A is 40 ° to the west of north , and is written N. 40 ° W. , and read north forty degrees west . The reverse bearing of a line is the bearing taken from the other end of the line . The forward bearing and ...
... bearing of AB from the point A is 40 ° to the west of north , and is written N. 40 ° W. , and read north forty degrees west . The reverse bearing of a line is the bearing taken from the other end of the line . The forward bearing and ...
Page 97
... bearing of an object is determined by simply reading the angle pointed out by the compass - needle when the object is bisected . To measure an Angle of Elevation with the Theodolite . ( 142. ) Direct the telescope toward the given ...
... bearing of an object is determined by simply reading the angle pointed out by the compass - needle when the object is bisected . To measure an Angle of Elevation with the Theodolite . ( 142. ) Direct the telescope toward the given ...
Page 104
... bearings with a compass . Plotting a Survey . When a field has been surveyed , it is easy to draw a plan of it on paper . For this purpose , draw a line to represent the meridian passing through the first station ; then lay off an an ...
... bearings with a compass . Plotting a Survey . When a field has been surveyed , it is easy to draw a plan of it on paper . For this purpose , draw a line to represent the meridian passing through the first station ; then lay off an an ...
Page 105
... bearings , if necessary , so that both bearings may run from the same angular point ; then the angle which any two contiguous sides make with each other may be determined from the following RULES . 1. If both courses are north or south ...
... bearings , if necessary , so that both bearings may run from the same angular point ; then the angle which any two contiguous sides make with each other may be determined from the following RULES . 1. If both courses are north or south ...
Page 106
... Bearings . 1 N. 50 ° 30 ′ E. 16.50 chains . 2 S. 68 ° 15 ' E. 14.20 66 3 S. 9 ° 45 ' E. 8.45 66 4 S. 21 ° 0 ' W. 6.84 ... bearing is less than 45 ° , the angle will be found on the left margin of one of the pages of the table , and the ...
... Bearings . 1 N. 50 ° 30 ′ E. 16.50 chains . 2 S. 68 ° 15 ' E. 14.20 66 3 S. 9 ° 45 ' E. 8.45 66 4 S. 21 ° 0 ' W. 6.84 ... bearing is less than 45 ° , the angle will be found on the left margin of one of the pages of the table , and the ...
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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.