Tables of Logarithms of Numbers and of Sines and Tangents for Every Ten Seconds of the Quadrant: With Other Useful TablesHarper & brothers, 1859 - 150 páginas |
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Página 92
... , one end of the needle indicating the north point and the other the south . A horizontal line perpendicular to a meridian is an east and west line All the meridians passing through a survey of moderate ex- 92 TRIGONOMETRY .
... , one end of the needle indicating the north point and the other the south . A horizontal line perpendicular to a meridian is an east and west line All the meridians passing through a survey of moderate ex- 92 TRIGONOMETRY .
Página 93
... east or west . Thus , if NS represent a meridian , and the angle NAB is 40 ° , then the 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 ...
... east or west . Thus , if NS represent a meridian , and the angle NAB is 40 ° , then the 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 ...
Página 104
... east or west according as this point lies on the east or west side of the meridian . The meridian distance of a line is the distance of the middle point of that line from some assumed meridian . ( 153. ) When a piece of ground is to be ...
... east or west according as this point lies on the east or west side of the meridian . The meridian distance of a line is the distance of the middle point of that line from some assumed meridian . ( 153. ) When a piece of ground is to be ...
Página 105
... east or west , subtract the less from the greater . 2. If both are north or south , but one east and the other west , add them together . 3. If one is north and the other south , SURVEYING . 105.
... east or west , subtract the less from the greater . 2. If both are north or south , but one east and the other west , add them together . 3. If one is north and the other south , SURVEYING . 105.
Página 106
... east or west , subtract their sum from 180 ° . 4. If one is north and the other south , one east and the other west , subtract their difference from 180 ° . Thus the angle CAB is equal to NAB - NAC . The angle CAD is equal to NAC + NAD ...
... east or west , subtract their sum from 180 ° . 4. If one is north and the other south , one east and the other west , subtract their difference from 180 ° . Thus the angle CAB is equal to NAB - NAC . The angle CAD is equal to NAC + NAD ...
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Términos y frases comunes
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
Pasajes populares
Página 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.
Página 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.
Página 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.
Página 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.
Página 69 - TO THE NUMBER OF DEGREES IN THE ARC ; So IS THE AREA OF THE CIRCLE, TO THE AREA OF THE SECTOR.
Página 73 - To find the solidity of a pyramid. RULE. Multiply the area of the base by one third of the altitude.
Página 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.
Página 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.