A System of Geometry and Trigonometry: Together with a Treatise on Surveying: Teaching Various Ways of Taking the Survey of a Field; Also to Protract the Same and Fine the Area. Likewise, Rectangular Surveying; Or, an Accurate Method of Calculating the Area of Any Field Arithmetically, Without the Necessity of Plotting It. To the Whole are Added Several Mathematical Tables ... with a Particular Explanation ... and the Manner of Using Them ...O. D. Cooke, 1813 - 168 σελίδες |
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Αποτελέσματα 1 - 5 από τα 7.
Σελίδα 13
... Base and the other two , Legs . 39. In a Right Angled Triangle the longest Side is called the Hypothenuse , and the other two , Legs , or Base and Perpendicular . Note . The three Angles of every Triangle being added together , will ...
... Base and the other two , Legs . 39. In a Right Angled Triangle the longest Side is called the Hypothenuse , and the other two , Legs , or Base and Perpendicular . Note . The three Angles of every Triangle being added together , will ...
Σελίδα 37
... Base ; then multiply the Base by half the Perpendic- ular , or the Perpendicular by half the Base ; the Pro- duct will be the Area . Or , multiply the whole Base by the whole Perpendicular , and half the Product will RULE 2. If it be a ...
... Base ; then multiply the Base by half the Perpendic- ular , or the Perpendicular by half the Base ; the Pro- duct will be the Area . Or , multiply the whole Base by the whole Perpendicular , and half the Product will RULE 2. If it be a ...
Σελίδα 41
... the Area by PROB . IX . Rule 3 . FIELD BOOK . See PLATE II . Fig . 46 . AB BC CA Chains . 20 24 18 Ch . L. - 24.00 To find the Area . Base BC Half Perp . AD 7.34 # 9600 Acres Roods 7200 16800 Acres 17 ) 61600 4 6 SURVEYING .
... the Area by PROB . IX . Rule 3 . FIELD BOOK . See PLATE II . Fig . 46 . AB BC CA Chains . 20 24 18 Ch . L. - 24.00 To find the Area . Base BC Half Perp . AD 7.34 # 9600 Acres Roods 7200 16800 Acres 17 ) 61600 4 6 SURVEYING .
Σελίδα 70
... Base . Double the given number of Acres , to which annex 5 Cyphers , and divide by the Base ; the Quotient will be the Perpendicular in Links . EXAMPLE . Upon a Base of 40 Chains to lay out 100 Acres in a Triangular form . Answer . 5000 ...
... Base . Double the given number of Acres , to which annex 5 Cyphers , and divide by the Base ; the Quotient will be the Perpendicular in Links . EXAMPLE . Upon a Base of 40 Chains to lay out 100 Acres in a Triangular form . Answer . 5000 ...
Σελίδα 71
... Base , or Side opposite the Angle from which the dividing Line is to be drawn ; Then say , As the number of Acres in the whole Triangle ; Is to the whole Base ; So is the given number of Acres ; To their part of the Base . EXAMPLE . See ...
... Base , or Side opposite the Angle from which the dividing Line is to be drawn ; Then say , As the number of Acres in the whole Triangle ; Is to the whole Base ; So is the given number of Acres ; To their part of the Base . EXAMPLE . See ...
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A System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Able Flint Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
A System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Able Flint Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Δημοφιλή αποσπάσματα
Σελίδα 26 - As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Σελίδα 23 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Σελίδα 8 - 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 25 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Σελίδα 25 - The solution of this CASE depends on the following PROPOSITION. In every Plane Triangle, As the Sum of any two Sides ; Is to their Difference ; So is the Tangent of half the Sum of the two opposite Angles ; To the Tangent of half the Difference between them. Add this half difference to half the Sum of the Angles and you will have the greater Angle ; and...
Σελίδα 8 - The radius of a circle is a line drawn from the centre to the circumference, as A, B.
Σελίδα 40 - Field work and protraction are truly taken and performed ; if not, an error must have been committed in one of them : In such cases make a second protraction ; if this agrees with the former, it is to be presumed the fault is in the Field work ; a re-survey must then be taken.
Σελίδα 40 - Let his attention first be directed to the map, and inform him that the top is north, the bottom south, the right hand east, and the left hand west.