| Mathematics - 1808 - 470 pages
...sicks only arc given ; — add the three sides together, and take half the sum ; from the halt. sum **subtract each side separately ; multiply the half sum and the three remainders** continually together ; and the square root of the last product will be the area of the triangle. •... | |
| Thomas Keith - Navigation - 1810 - 420 pages
...these four logarithms, is the logarithmical sine of half the angle sought. (H. 215.) OR, RULE III. **From half the sum of the three sides subtract each side separately.** Then add together, The logarithmica! co-secants of half the sum of the sides, and of the difference... | |
| Andrew Mackay - Mathematical instruments - 1811 - 162 pages
...easily measured by the above method. In this case, therefore, the three sides are to be measured. Now **from half the sum of the th'ree sides, subtract each side separately;** then extract the square root of the product of half the sum of the sides by the three differences ;... | |
| John Gummere - Surveying - 1814 - 346 pages
...48° 15'? Ans. 6A. 3R. 18P. PROBLE To find the area of a triangle, when the three sides are. given. % **RULE; From half the sum of the three sides subtract each side** severally ; multiply the half sum and the three remainders contiuually together, and the square root... | |
| Robert Gibson - Surveying - 1821 - 604 pages
...problem will be evident. PROB. V11L JTie tffree. sides of a plane triangle given to Jbid the tfrga. **RULE* "From half the sum of the three sides subtract each side** severally ; take the logarithms of half the sum and three remainders, and half their total will be... | |
| Anthony Nesbit - Measurement - 1824 - 434 pages
...£6 4*. 7 \d. , PROBLEM V. To find the area of a triangle, the three sides only of which are given. **RULE. From half the sum of the three sides subtract each side** severally ; multiply the half sum and the three remainders continually together; and the square root... | |
| John Nicholson - Machinery - 1825 - 838 pages
...three sides only are given : Add the three sides together, and take half the sum ; from the half sum **subtract each side separately ; multiply the half sum and the three remainders** continually together ; and the square root of the last product will be the area of the triangle. Ex.... | |
| Zadock Thompson - Arithmetic - 1826 - 164 pages
...— If the three sides only are given, add these together, and tuke half the sum ; from the half sum **subtract each side separately ; multiply the half sum and the three remainders** continually together, and the square root of the last product will be the area of the triangle. Examples.... | |
| Thomas Keith - Navigation - 1826 - 442 pages
...these four logarithms, is the logarithmical sine of half the angle sought. (F. 184.) OR, RULE III. **From half the sum of the three sides subtract each side separately.** Then add together, The logarithmical co-secants of half the sum of the sides, and of the difference... | |
| William Kinne - 1829 - 248 pages
...true right-angle. RULE 2. — To find the area of any triangle when the three sides only are given, **RULE. — From half the sum of the three sides' subtract each side** severally ; multiply these three remainders and the said half sum continually together; then the square... | |
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