 ... and, setting one foot upon A, with this extent describe an arc cutting AB in B ; then, taking the extent of D° from the same line of chords, set it off from B to c ; and, joining A c, BA c is the angle required. Thus...  Notes on Military Surveying and Reconnaissance - Page 32by William Paterson (Lieut.-Col.) - 1882 - 146 pagesFull view - About this book
 | John F. Heather - Scientific apparatus and instruments - 1849 - 208 pages
...down. 1st. To set off an angle, which shall contain D° from the point A, in the straight line AB. Open the compasses to the extent of 60° upon the line of chords, which equals the radius to which this line has been laid down *, and, setting one foot upon A, with this... | |
 | Thomas Baker - Railroads - 1850 - 244 pages
...off" an angle to contain a given number of degrees. Let the angle be required to contain 41 degrees. Open the compasses to the extent of 60° upon the line of chords, and, setting one foot upon A, with this extent, describe an arc cutting AB in B ; then taking the extent... | |
 | Lucius D. Gould - Carpentry - 1853 - 234 pages
...down. 1st. To set off an angle, which shall contain D° from the point A, in the straight line AB. Open the compasses to the extent of 60° upon the line of chords, which equals the radius to which this line has been laid down, and, setting one foot upon A, Fig. 21, with... | |
 | Thomas Baker (C.E.) - 1865 - 174 pages
...off an angle to contain a given number of degrees. Let the angle be required to contain 41 degrees. Open the compasses to the extent of 60° upon the line of chords, and setting one foot upon A, with this extent, describe an arc cutting AB in B ; then taking the extent... | |
 | John Fry Heather - Mathematical instruments - 1866 - 228 pages
...down. 1st. To set off an angle, •which shall contain 'D° from the point A, in the straight line A B. Open the compasses to the extent of 60° upon the line of chords, which equals the radius to which this line has been laid down (Euc. iv. prop. 15, Cor.), and, setting one... | |
 | John Fry Heather - Scientific apparatus and instruments - 1884 - 566 pages
...down. 1st. To set off an angle, which shall contain D° from the point A, in the straight line A B. Open the compasses to the extent of 60° upon the line of chords, which equals the radius to which this line has been laid down (Euclid iv. prop. 15, Cor.), and, setting one... | |
 | Thomas Baker - Railroads - 1891 - 262 pages
...off an angle to contain a given number ofdegreet. Let the angle be required to contain 41 degrees. Open the compasses to the extent of 60° upon the line of chords, and, Betting one foot upon A, with this extent, describe an arc cutting AB in B; then taking the A*... | |
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