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 9.
Σελίδα 10
... Chord is a Right Line drawn from one end of an Arch to the other , and is the measure of the Arch ; as HG is the Chord of the Arch HIG . Fig . 6 . Note . The Chord of an Arch of 60 degrees is equal in length to the Radius of the Circle ...
... Chord is a Right Line drawn from one end of an Arch to the other , and is the measure of the Arch ; as HG is the Chord of the Arch HIG . Fig . 6 . Note . The Chord of an Arch of 60 degrees is equal in length to the Radius of the Circle ...
Σελίδα 11
... Chord ; thus the space comprehended be- tween the Arch HIG and the Chord HG is called a Segment . Fig . 6 . 18. A Quadrant is one quarter of a Circle ; as ACB . Fig . 6 . 19. A Sector of a Circle is a space contained between two Radii ...
... Chord ; thus the space comprehended be- tween the Arch HIG and the Chord HG is called a Segment . Fig . 6 . 18. A Quadrant is one quarter of a Circle ; as ACB . Fig . 6 . 19. A Sector of a Circle is a space contained between two Radii ...
Σελίδα 15
... Chords take 60 Degrees with the Dividers , and with one foot in B describe an Arch from the Line AB ; from the same Scale take the given number of Degrees , 36 , and lay it on the Arch from C to D ; draw a Line from B through D , and ...
... Chords take 60 Degrees with the Dividers , and with one foot in B describe an Arch from the Line AB ; from the same Scale take the given number of Degrees , 36 , and lay it on the Arch from C to D ; draw a Line from B through D , and ...
Σελίδα 16
... Chord of 60 Degrees describe an Arch on the angular Point , and on a Scale of Chords measure the Arch intercepted by the Lines forming the angle . A more convenient method of making and measur- ing Angles is to use a Protractor instead ...
... Chord of 60 Degrees describe an Arch on the angular Point , and on a Scale of Chords measure the Arch intercepted by the Lines forming the angle . A more convenient method of making and measur- ing Angles is to use a Protractor instead ...
Σελίδα 17
... Chord of 60 ° , it may be continued beyond A , for the purpose of making the Angle . PROBLEM XI . To make a right ... Chords . PROBLEM XII make a Right Angled Trian- gle , the two Legs beigiven . Fig . 33 . Suppose the Leg AB 38 , and ...
... Chord of 60 ° , it may be continued beyond A , for the purpose of making the Angle . PROBLEM XI . To make a right ... Chords . PROBLEM XII make a Right Angled Trian- gle , the two Legs beigiven . Fig . 33 . Suppose the Leg AB 38 , and ...
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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.