The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this ArtE. Duyckinck, 1811 - 508 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 6 - 10 από τα 52.
Σελίδα 39
... divided into 360 equal parts called degrees , and each degree into 60 equal parts called minutes , and each minute into 60 equal parts cal- ed seconds , and these into thirds , fourths , & c . these parts being greater or less as the ...
... divided into 360 equal parts called degrees , and each degree into 60 equal parts called minutes , and each minute into 60 equal parts cal- ed seconds , and these into thirds , fourths , & c . these parts being greater or less as the ...
Σελίδα 40
... divided into four equal parts , as BD , DA , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the ...
... divided into four equal parts , as BD , DA , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the ...
Σελίδα 42
... divided into four equal parts , as BD , D. , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the ...
... divided into four equal parts , as BD , D. , AE , and , EB ; ( by def . 10. ) and so BD be- comes a quadrant or the fourth part of the peri- phery : therefore the radius DC is always the sine of a quadrant , or of the fourth part of the ...
Σελίδα 50
... , that is , accb the angles which are opposite to those equal sides , will also be equal to each other ; viz . a = b . For let the triangle a b c be divided into two triangles a cd , dc b , by making the 50 GEOMETRICAL.
... , that is , accb the angles which are opposite to those equal sides , will also be equal to each other ; viz . a = b . For let the triangle a b c be divided into two triangles a cd , dc b , by making the 50 GEOMETRICAL.
Σελίδα 58
... will be equal to each other ; and will be as many as the parts into which their bases were divided ; therefore it will be as the sum of the parts in one base , is to the sum of those in the other , so will be the sum of the 58 GEOMETRICAL.
... will be equal to each other ; and will be as many as the parts into which their bases were divided ; therefore it will be as the sum of the parts in one base , is to the sum of those in the other , so will be the sum of the 58 GEOMETRICAL.
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acres altitude Answer arch azimuth base bearing blank line centre chains and links chord circle circumferentor Co-sec Co-tang column compasses contained decimal difference distance line divided divisions draw east Ecliptic edge feet field-book figures fore four-pole chains geom given number half the sum Horizon glass hypothenuse inches instrument Lat Dep Lat latitude length logarithm measure meridian distance multiplied natural co-sine natural sine needle Nonius number of degrees object observed off-sets opposite parallel parallelogram pegs perches perpendicular plane pole pole star Portmarnock PROB protractor Quadrant quotient radius right angles right line scale of equal SCHOLIUM screw Secant sect Sextant side sights square station stationary distance subtract Sun's survey taken Tang tangent theo theodolite trapezium triangle ABC trigonometry two-pole chains vane versed sine vulgar fraction whence
Δημοφιλή αποσπάσματα
Σελίδα 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.
Σελίδα 25 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 197 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 106 - 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.
Σελίδα 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.