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 Find 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 ... |
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Seite 48
If the Course or Bearing of one of the Sides is Northerly and the other Southerly ,
one Easterly and the other Westerly , subtract the less Course from the greater ;
the Remainder will be the Angle between them . RULE 2. If one is Northerly and ...
If the Course or Bearing of one of the Sides is Northerly and the other Southerly ,
one Easterly and the other Westerly , subtract the less Course from the greater ;
the Remainder will be the Angle between them . RULE 2. If one is Northerly and ...
Seite 146
Find the Log . next less than the given one , and take the difference between that
and the given one ; also take the difference between the next greater and the
next less Log . than the given one ; divide the former difference by the latter ...
Find the Log . next less than the given one , and take the difference between that
and the given one ; also take the difference between the next greater and the
next less Log . than the given one ; divide the former difference by the latter ...
Seite 147
The Number to the Log . next less than the given one is 7620 because the Index
is 3 ; to this add 4 and it makes 7624 the required Number . 2. Required the
Number to the Logarithm 2.73340 Given Log . .73340 Next greater Log .73400
Next ...
The Number to the Log . next less than the given one is 7620 because the Index
is 3 ; to this add 4 and it makes 7624 the required Number . 2. Required the
Number to the Logarithm 2.73340 Given Log . .73340 Next greater Log .73400
Next ...
Seite 148
If the Degrees be less than 45 , look for them at the Top of the Columns , and
under Sine , Tangent or Secant , whichever is wanted , and for the Minutes at the
Left hand ; but if more than 45 , look for the Degrees at the Bottom over Sine , & c
...
If the Degrees be less than 45 , look for them at the Top of the Columns , and
under Sine , Tangent or Secant , whichever is wanted , and for the Minutes at the
Left hand ; but if more than 45 , look for the Degrees at the Bottom over Sine , & c
...
Seite 149
9.73627 Next less 9.73476 Next less 9.73476 Difference 121 Difference 151 As
151 : 5 ::: 121 : 4 The Degrees and Minutes for the Log . next less than the given
one are 28 ° 30 ' , to which add t ' and it makes 28 ° 34 ' Note . As after the most ...
9.73627 Next less 9.73476 Next less 9.73476 Difference 121 Difference 151 As
151 : 5 ::: 121 : 4 The Degrees and Minutes for the Log . next less than the given
one are 28 ° 30 ' , to which add t ' and it makes 28 ° 34 ' Note . As after the most ...
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SYSTEM OF GEOMETRY & TRIGONOME Abel 1765-1825 Flint,George Gillet,Frederick a. P. (Frederick Augu Barnard Keine Leseprobe verfügbar - 2016 |
SYSTEM OF GEOMETRY & TRIGONOME Abel 1765-1825 Flint,George Gillet,Frederick a. P. (Frederick Augu Barnard Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
according accurately added Angle Arch Base Bearing calculated called Chains Circle Co-Sine Sine Compass contained Course Decimals describe Diagonal Difference directions Dist Distance divided double draw drawn Elongation equal EXAMPLE Field FIELD BOOK Figure find the Angle find the Area four fourth give given greater half hand Hypothenuse Land Left Leg BC length less Line Links Logarithms manner measuring method Minutes multiply Natural Sines Needle North North Areas Note number of Degrees observe opposite parallel particular Perpendicular PLATE Plot Point practice preceding PROBLEM Product Proportion protract Quotient Radius Remainder represent Right Angled Rods Roods Rule Secant Co-Secant seen Side Sine Co-Sine Sine Sine Sine Square Square Root Star Station subtract Surveying Surveyor Table Tang Tangent Co-Secant Secant third Trapezoid Triangle TRIGONOMETRY true whole
Beliebte Passagen
Seite 28 - 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.
Seite 27 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Seite 6 - The Circumference of every circle is supposed to be divided into 360 equal parts, called Degrees ; and each degree into 60 Minutes, each minute into 60 Seconds, and so on.
Seite 24 - In this case the" hypothenuse may be found by the square root without finding the angles ; according to the following PROPOSITION. IN EVERY RIGHT ANGLED TRIANGLE, THE SUM OF THE SQUARES OF THE TWO LEGS IS EQUAL TO THE SQUARE OF THE HYPOTHENUSE. In the above EXAMPLE, the square of AB 78.7 is 6193.69, the square of BC 89 is 7921 ; these added make 14114,69 the square root of which is nearest 119.
Seite 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.
Seite 33 - To find the area of a trapezoid. RULE. Multiply half the sum of the two parallel sides by the perpendicular distance between them : the product will be the area.
Seite 6 - Therefore all radii of the same circle are equal. 13. The diameter of a circle is a right line drawn from one side of the circumference to the other, passing through the centre ; and it divides the circle into two equal parts, called semicircles ; as AB or DE.
Seite 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.
Seite 23 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.