A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles : Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, jun. and Cushing & Jewett, J. Robinson printer, 1822 - 326 σελίδες |
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Σελίδα 27
... radius , or any line from the centre to the circumference ; whence all radii of the same , or of equal circles are equal . 16 . The diameter of a circle is a right line drawn through the centre , and terminated on both sides by the ...
... radius , or any line from the centre to the circumference ; whence all radii of the same , or of equal circles are equal . 16 . The diameter of a circle is a right line drawn through the centre , and terminated on both sides by the ...
Σελίδα 31
... radius , the circumference of a circle may be described . 4. It is also required that the equality of lines and angles to others given , be granted as possible : that it is possible for one right line to be perpendicular to another , at ...
... radius , the circumference of a circle may be described . 4. It is also required that the equality of lines and angles to others given , be granted as possible : that it is possible for one right line to be perpendicular to another , at ...
Σελίδα 46
... radius . Thus in the circle AEBD , if the arc AEB be an arc of 60 degrees , and the chord AB be drawn ; then D AB - CB - AC . fig . 33 . fig . 33 . E C B In the triangle ABC , the angle ACB is 60 degrees , being measured by the arc AEB ...
... radius . Thus in the circle AEBD , if the arc AEB be an arc of 60 degrees , and the chord AB be drawn ; then D AB - CB - AC . fig . 33 . fig . 33 . E C B In the triangle ABC , the angle ACB is 60 degrees , being measured by the arc AEB ...
Σελίδα 47
... radius of the circle ABC is be to the radius of the circle , a b c , ( for the greater the radius is , the greater is the cir- cle described by that radius ; and consequently the greater any particular arc of that circle is , so the ...
... radius of the circle ABC is be to the radius of the circle , a b c , ( for the greater the radius is , the greater is the cir- cle described by that radius ; and consequently the greater any particular arc of that circle is , so the ...
Σελίδα 54
... radius CB ; BH an arc of it , and DH its com- plement ; HL or FC the sine , FH or CL its co - sine ; BK its tangent ... radius is to the tangent . 2. Radius is to the tangent of an arc , as the co- sine of it is to the sine . 3. The sine ...
... radius CB ; BH an arc of it , and DH its com- plement ; HL or FC the sine , FH or CL its co - sine ; BK its tangent ... radius is to the tangent . 2. Radius is to the tangent of an arc , as the co- sine of it is to the sine . 3. The sine ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
Συχνά εμφανιζόμενοι όροι και φράσεις
20 perches ABCD acres altitude Answer base bearing blank line centre chains and links chord circle circumferentor Co-secant co-sine Co-tang column compass contained cyphers decimal decimal fraction difference Dist divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm measure meridian distance multiplied needle number of degrees object off-sets opposite parallel parallelogram perpendicular piece of ground plane polygon Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM secant second station sect semicircle side sights sine square root stationary distance stationary line sun's suppose survey taken tang tangent thence theo theodolite THEOREM thro triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence