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 16.
Σελίδα 23
... Multiply the Natural Sines of the two Angles by the Hypothenuse , the Pro- ducts will be the length of the two Legs . EXAMPLE . Nat . Sine of 35 ° 30 ' 0.58070 Nat . Sine of 54 ° 30 ′ 0.81412 Hyp . 25 Hyp . 25 290350 116140 14.51750 Leg ...
... Multiply the Natural Sines of the two Angles by the Hypothenuse , the Pro- ducts will be the length of the two Legs . EXAMPLE . Nat . Sine of 35 ° 30 ' 0.58070 Nat . Sine of 54 ° 30 ′ 0.81412 Hyp . 25 Hyp . 25 290350 116140 14.51750 Leg ...
Σελίδα 23
... Multiply the Natural Sines of the two Angles by the Hypothenuse , the Pro- ducts will be the length of the two Legs . Nat . Sine of 35 ° 30 ' 0.58070 Hyp . 25 290350 EXAMPLE . Nat . Sine of 54 ° 30 ′ 0.81412 Hyp . 25 407060 116140 ...
... Multiply the Natural Sines of the two Angles by the Hypothenuse , the Pro- ducts will be the length of the two Legs . Nat . Sine of 35 ° 30 ' 0.58070 Hyp . 25 290350 EXAMPLE . Nat . Sine of 54 ° 30 ′ 0.81412 Hyp . 25 407060 116140 ...
Σελίδα 36
... multiply the excess by 4 : Thus , 15 Two Rod . Chains and 38 Links make 31.52 Rods . PROBLEM III . To reduce Four Rod Chains to Rods and Decimal parts . RULE . Multiply the Chains , or Chains and Links , by 4 ; the Product will be Rods ...
... multiply the excess by 4 : Thus , 15 Two Rod . Chains and 38 Links make 31.52 Rods . PROBLEM III . To reduce Four Rod Chains to Rods and Decimal parts . RULE . Multiply the Chains , or Chains and Links , by 4 ; the Product will be Rods ...
Σελίδα 37
... Multiply the length into the breadth ; the Product will be the Area . PROBLEM VIII . To find the Area of a Rhombus or Rhomboides . RULE . Drop a Perpendicular from one of the An- gles to its opposite Side , and multiply that side into ...
... Multiply the length into the breadth ; the Product will be the Area . PROBLEM VIII . To find the Area of a Rhombus or Rhomboides . RULE . Drop a Perpendicular from one of the An- gles to its opposite Side , and multiply that side into ...
Σελίδα 38
... multiply the two Legs into each other , and half the Product will be the Area . RULE 3. When the three Sides of a ... Multiplication of their corresponding Numbers ; and as the Number answering to the one half of a Logarithm will be the ...
... multiply the two Legs into each other , and half the Product will be the Area . RULE 3. When the three Sides of a ... Multiplication of their corresponding Numbers ; and as the Number answering to the one half of a Logarithm will be the ...
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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.