The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtEvert Duyckinck, 1814 - 508 σελίδες |
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Σελίδα 41
... secant of the com- plement of any arc , is called the co - sine , co - tan- gent , or co - secant of the arc itself : thus FH is the sine , DI the tangent , and CI the secant of the arc DH : or they are the co - sine , co - tangent , or ...
... secant of the com- plement of any arc , is called the co - sine , co - tan- gent , or co - secant of the arc itself : thus FH is the sine , DI the tangent , and CI the secant of the arc DH : or they are the co - sine , co - tangent , or ...
Σελίδα 42
... secant of an arc , is also the sine , tangent , and secant of an angle whose measure the arc is thus because the arc HB is the measure of the angle HCB , and since HL is the sine , BK the tangent , and CK the secant , BL the versed sine ...
... secant of an arc , is also the sine , tangent , and secant of an angle whose measure the arc is thus because the arc HB is the measure of the angle HCB , and since HL is the sine , BK the tangent , and CK the secant , BL the versed sine ...
Σελίδα 62
... secant , and CI its co - secant . Fig . 8 . 1. The co - sine of an arc is to the sine , as the ra dius is to the tangent . 2. The radius is to the tangent of an arc 62 GEOMETRICAL.
... secant , and CI its co - secant . Fig . 8 . 1. The co - sine of an arc is to the sine , as the ra dius is to the tangent . 2. The radius is to the tangent of an arc 62 GEOMETRICAL.
Σελίδα 63
... secant . 7. The sine of an arc is to the radius , as the tan- gent is to the secant . The triangles CLH and CBK , being similar , ( by theo . 16. ) 1. CL : LH :: CB : BK . 2. Or , CB : BK :: CL : LH . The triangles CFH and CDI , being ...
... secant . 7. The sine of an arc is to the radius , as the tan- gent is to the secant . The triangles CLH and CBK , being similar , ( by theo . 16. ) 1. CL : LH :: CB : BK . 2. Or , CB : BK :: CL : LH . The triangles CFH and CDI , being ...
Σελίδα 85
... secant of 28 ° 30 ' was required ? Make the given radius , two inches , a transverse distance to 0 and 0 , at the ... secant of any degrees ; to find the length of the radius to that sine , tangent , or secant . Make the given length a ...
... secant of 28 ° 30 ' was required ? Make the given radius , two inches , a transverse distance to 0 and 0 , at the ... secant of any degrees ; to find the length of the radius to that sine , tangent , or secant . Make the given length a ...
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acres altitude Answer arch base bearing blank line centre chains and links circle circle of latitude circumferentor Co-sec Co-tang column compasses contained decimal Dep Lat Dep difference Dist divided divisions draw east Ecliptic edge EXAMPLE feet field-book figures fore four-pole chains geometrical series given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied Natural Co-sines natural sine Nonius number of degrees object observed off-sets opposite parallelogram perches perpendicular plane pole pole star PROB proportion protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect semicircle Sextant side sights square root station stationary distance subtracted survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry vane versed sine vulgar fraction