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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Σελίδα 39
... Index , or subtracting 10 , without the trouble of setting down the Cyphers . By Natural Sines . Multiply the two given Sides into each other ; and that Product by the Natural Sine of the given Angle ; the last Product will be double ...
... Index , or subtracting 10 , without the trouble of setting down the Cyphers . By Natural Sines . Multiply the two given Sides into each other ; and that Product by the Natural Sine of the given Angle ; the last Product will be double ...
Σελίδα 46
... Indexes , one moveable and the other fixed , as to ascertain the Angle made by two Sides , without reference to the Bearing of those Sides . Such a Compass would be particularly useful in surveying Land where there are mineral ...
... Indexes , one moveable and the other fixed , as to ascertain the Angle made by two Sides , without reference to the Bearing of those Sides . Such a Compass would be particularly useful in surveying Land where there are mineral ...
Σελίδα 75
... Index of the Logarithm for the double Area without the trouble of setting down the Cyphers . By Natural Sines . Divide the double Area by the Natural Sine of the given Angle , and that Quotient by the given Side ; the last Quotient will ...
... Index of the Logarithm for the double Area without the trouble of setting down the Cyphers . By Natural Sines . Divide the double Area by the Natural Sine of the given Angle , and that Quotient by the given Side ; the last Quotient will ...
Σελίδα 145
... Index ; and is always a Unit less than the places of fig- ures in the whole Number for which it is the Logarithm : Thus , The Log . of 6543 is 654.3 · - 3 81578 2.81578 65.43 6.543 1.81578 081578 The Log . of a Decimal Fraction is the ...
... Index ; and is always a Unit less than the places of fig- ures in the whole Number for which it is the Logarithm : Thus , The Log . of 6543 is 654.3 · - 3 81578 2.81578 65.43 6.543 1.81578 081578 The Log . of a Decimal Fraction is the ...
Σελίδα 145
... Index ; and is always a Unit less than the places of fig- ures in the whole Number for which it is the Logarithm : Thus , The Log , of 6543 654.3 65.43 · 6.543 is · 381578 2.81578 1.81578 0 81578 The Log . of a Decimal Fraction is the ...
... Index ; and is always a Unit less than the places of fig- ures in the whole Number for which it is the Logarithm : Thus , The Log , of 6543 654.3 65.43 · 6.543 is · 381578 2.81578 1.81578 0 81578 The Log . of a Decimal Fraction is 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.