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 : Compiled from Various AuthorsOliver D. Cooke, 1804 - 168 σελίδες |
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Σελίδα 8
... Needle ; with Rules for finding the Varia- tion of the Compass and for drawing a Meridian Line . : The Mathematical Tables are , A Traverse Table or Table of Difference of Latitude and Departure , cal- culated for every Degree and ...
... Needle ; with Rules for finding the Varia- tion of the Compass and for drawing a Meridian Line . : The Mathematical Tables are , A Traverse Table or Table of Difference of Latitude and Departure , cal- culated for every Degree and ...
Σελίδα 46
... are mineral substances which have an influence upon the Compass Needle , attracting it one way or the other ; and thus AB . N. 7 ° 0 ′ W. Ch . rendering it impossible to take a Course by it with precision . 4.6 SURVEYING .
... are mineral substances which have an influence upon the Compass Needle , attracting it one way or the other ; and thus AB . N. 7 ° 0 ′ W. Ch . rendering it impossible to take a Course by it with precision . 4.6 SURVEYING .
Σελίδα 77
... NEEdle . HE Variation of the Compass is the number of Degrees that or West . This differs in different places , and in the same place at different times . It is , at present , in Connecticut , a few degrees to the Westward . That is ...
... NEEdle . HE Variation of the Compass is the number of Degrees that or West . This differs in different places , and in the same place at different times . It is , at present , in Connecticut , a few degrees to the Westward . That is ...
Σελίδα 79
... NEEDLE . T is well known that any Iron substance has an influence upon Α the point where it would settle were there no such attraction . Surveyor should therefore be careful to see that no Iron is near the Compass when taking a Bearing ...
... NEEDLE . T is well known that any Iron substance has an influence upon Α the point where it would settle were there no such attraction . Surveyor should therefore be careful to see that no Iron is near the Compass when taking a Bearing ...
Σελίδα 79
... Needle . T is well known that any Iron substance has an influence upon the magnetic Needle , attracting it one way or the other from the point where it would settle were there no such attraction . A Surveyor should therefore be careful ...
... Needle . T is well known that any Iron substance has an influence upon the magnetic Needle , attracting it one way or the other from the point where it would settle were there no such attraction . A Surveyor should therefore be careful ...
Άλλες εκδόσεις - Προβολή όλων
System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Abel Flint Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
System of Geometry and Trigonometry: Together With a Treatise on Surveying ... Abel Flint Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Δημοφιλή αποσπάσματα
Σελίδα 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.
Σελίδα 27 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Σελίδα 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.
Σελίδα 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.
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 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.
Σελίδα 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.
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.
Σελίδα 23 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.