| John Radford Young - Nautical astronomy - 1833 - 264 pages
...(JS-a)(JS-4)(JS — e); which formula furnishes the well known rule, given in all books on mensuration, for **the area of a triangle when the three sides are given. (See** Geom. p. 202.) These expressions for the area of a plane triangle are all adapted to logarithmic computation.... | |
| ...pupil teachei in the fifth year, by algebra and geometry, without the use of trigonometry, the rula **for finding the area of a triangle when the three sides are given.** 3. Point out exactly how far algebra corresponds to arithmetic, and at what point, not merely a peculiar... | |
| HORATIO N. ROBINSON, A. M. - 1853
...the area of a triangle whose base is 18J feet and altitude 25| feet ? Ans. 231|i feet. PROBLEM III. **Investigate and give a rule for finding the area of a triangle when** two sides and their included angle are given. Let ABC be the triangles, AB, BC the given sides, and... | |
| Horatio Nelson Robinson - Navigation - 1858 - 347 pages
...a triangle whose base is 18£ feet and altitude 25J feet ? Ans. 231^ feet. PROBLEM III. Invettignte **and give a rule for finding the area, of a triangle when** two sides and their included angle are given. Let AB C be the triangles, AE, BO the given sides, and... | |
| 1859
...acres, Irish plantation measure, to statute acres, roods, and perches. 1 4. State the ordinary formula **for finding the area of a triangle when the three sides are given.** DRAWING AND DESCRIPTIVE GEOMETRY, Examiner, JAMBS THOMSON, MA, 28*A September, 1858.— Afternoon.... | |
| 1874
...what follows? State without proving. Q. Show how to inscribe a circle in a triangle ; and then deduce **a rule for finding the area of a triangle when the three sides** of the triangle and the area of the inscribed circle are known. SOLID GEOMETRY. 1. Prove that, if a... | |
| Education - 1876
...of the side of a square to its diagonal. 4. Show how to inscribe a circle in a triangle, and deduce **a rule for finding the area of a triangle when the three sides** of the triangle and the area of the inscribed circle are known. 5. How is the area of a spherical triangle... | |
| Samuel Mecutchen, George Mornton Sayre - Arithmetic - 1877
...dividing the first two sides from the others; what is the area of the field? ANALYSIS. — Applying the **rule for finding the area of a triangle when the three sides are given,** we find the area of one of the triangles = y/60 x 30 x 20 x 10 = 1/360000 = 600 square rods ; the other... | |
| 1877 - 343 pages
...what follows ? State without proving. 6. Show how to inscribe a circle in a triangle ; and then deduce **a rule for finding the area of a triangle when the three sides** of the triangle and the area of the inscribed circle are known. MODERN AND PHYSICAL GEOGRAPHY. 1. DEFINE... | |
| Thomas Page (schoolmaster) - 1879
...AC= 17, all in chains. Also the angle at E is a right angle. Find the area. (32) Give the rules (1) **For finding the area of a triangle when the three sides are** known ; (2) For finding the diameter of a circle when the height of an arc and the chord of half the... | |
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