 | Robert Gibson - 1806 - 486 Seiten
...following problem will be evident. PROBLEM VIII. Three sides of a plane triangle given t0 find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of half the sum and three remainders, anil half their total will be... | |
 | Thomas Keith - 1810 - 478 Seiten
...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... | |
 | Robert Gibson - 1811 - 580 Seiten
...following problem will be evident. PROB. nil. The three sides of a filane triangle given to find the area. 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... | |
 | Andrew Mackay - 1811 - 162 Seiten
...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 - 1814 - 398 Seiten
...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... | |
 | Jeremiah Day - 1815 - 388 Seiten
...given, we -have this general rule ; from half the sum of the sides, subtract each side severally ; multiply together the half sum and the three remainders ; and extract the square root cf the product. ,, . SECTION viir. • i. 1 • COMPUTATION OF THE CANON. A 233 nr^^ trigonometrical... | |
 | Robert Gibson - 1818 - 502 Seiten
...problem will be evident. PROB. VIII. Tlie three sides of a plane triangle given, to find the area. RULE. From half the sum of the three sides subtract each side severally ; take the logarithms of the half sum and three remainders, and half their total will be... | |
 | Anthony Nesbit - 1824 - 476 Seiten
...£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... | |
 | Thomas Keith - 1826 - 504 Seiten
...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 - 246 Seiten
...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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RULE. — From half the sum of the three sides subtract each side separately ; multiply the half -sum and the three remainders together ; the square root of the product is the area. 
