The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtJ.J. Harper, 1828 - 435 σελίδες |
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Σελίδα 39
... sine of an arc , is a perpendicular line let fall from one end thereof , to a diameter drawn to the other end : thus ... versed sine of an arc is that part of the diameter that lies between the right sine and the circumference : thus LB ...
... sine of an arc , is a perpendicular line let fall from one end thereof , to a diameter drawn to the other end : thus ... versed sine of an arc is that part of the diameter that lies between the right sine and the circumference : thus LB ...
Σελίδα 40
... sine , tangent , or secant of the complement of any arc , is called the co - sine , co - tangent , or co - secant of ... versed sine , HF the co - sine , DI the co - tangent , and CI the co - secant , & c . of the arc BH ; then HL is ...
... sine , tangent , or secant of the complement of any arc , is called the co - sine , co - tangent , or co - secant of ... versed sine , HF the co - sine , DI the co - tangent , and CI the co - secant , & c . of the arc BH ; then HL is ...
Σελίδα 69
... sine and tangent of 28 ° 30 ' to that radius . Solution . Open the sector so that the transverse distance of 90 and ... versed sine to a given number of degrees , and a given radius . Make the transverse distance of 90 and 90 on the ...
... sine and tangent of 28 ° 30 ' to that radius . Solution . Open the sector so that the transverse distance of 90 and ... versed sine to a given number of degrees , and a given radius . Make the transverse distance of 90 and 90 on the ...
Σελίδα 70
... sine com- plement and the radius gives the versed sine . To open the legs of the sector , so that the corresponding double scales of lines , chords , sines , and tangents , may make each a right angle . On the lines , make the lateral ...
... sine com- plement and the radius gives the versed sine . To open the legs of the sector , so that the corresponding double scales of lines , chords , sines , and tangents , may make each a right angle . On the lines , make the lateral ...
Σελίδα 76
... Versed sine . This line is placed immediately under the line of sines , and numbered in a contrary direction , viz ... versed sines with the line of sines , it will appear that the versed sines do not belong to the arches with which they ...
... Versed sine . This line is placed immediately under the line of sines , and numbered in a contrary direction , viz ... versed sines with the line of sines , it will appear that the versed sines do not belong to the arches with which they ...
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ABCD acres altitude Answer arch base bearing centre chains and links circle circumferentor Co-sec Co-tang column compasses contained cube root decimal difference of latitude Dist divided divisions divisor draw east Ecliptic edge EXAMPLE feet field-book figure four-pole chains given angle given number half the sum height Hence Horizon glass hypothenuse inches instrument length logarithm measure Meridian Altitude meridian distance method multiplied natural co-sine natural number natural sine Nonius number of degrees object observed off-sets opposite parallel parallelogram perches perpendicular plane prob PROBLEM proportional protractor Quadrant quotient radius rhombus right angles right line Secant sect semicircle Sextant side square root station subtract Sun's survey taken Tang tangent theo theodolite THEOREM trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence