| Euclides - 1845 - 544 pages
...about a given circle. 100. On the sides of an equilateral triangle three squares are described. Compare **the area of the triangle formed by joining the centres of these** squares with the area of the equilateral triangle. 101. If three equal circles touch each other; to... | |
| John William Colenso (bp. of Natal.) - 1851
...given Iog2 = .30103. '278. On the sides of an equilateral triangle three squares are described. Compare **the area of the triangle formed by joining the centres of these** squares with the area of the equilateral triangle. 279. From the values of BD and sinA in (116), obtain... | |
| George Wirgman Hemming - 1851
...(cot a ,- cot /3). 4. On the sides of an equilateral triangle, three squares are described. Compare **the area of the triangle formed by joining the centres of these** squares with that of the equilateral triangle. 5. If R, r be the radii of the circles described N about... | |
| Bengal council of educ - 1852 - 348 pages
...ABE). Cos 2 (A + B). 8. On the sides of an equilateral triangle three squares are described. Compare **the area of the triangle formed by joining the centres of these** squares with the area of the equilateral triangle. Friday, April 7th. FIBST AND SECOND CLASSES. Footprints,... | |
| Education - 1855
...ABE). Cos2 (A + B). 8. On the sides of an equilateral triangle three squares are described. Compare **the area of the triangle formed by joining the centres of these** squares with the area of the equilateral triangle. Friday, April 7(h. FIHST AND SECOND CLASSES. Footprints,... | |
| Isaac Todhunter - 1860
...the sides BC, CA, AB ; and circles are described about the triangles PA'ff, PEC', PC? A'. Shew that **the area of the triangle formed by joining the centres...circles is one-fourth of the area of the triangle ABC.** 42. Three circles touch each other externally; prove that the square of the area of the triangle formed... | |
| Henry W. Jeans - 1873 - 272 pages
...a2c2 + 62c2. [l0Oa]. On the' sides of an equilateral triangle three squares are described. Show that **the area of the triangle formed by joining the centres of these** squares=area equilateral triangle x [101 a]. A fleet of steam- vessels, under the command of an admiral,... | |
| Henry William Jeans - 1873
...a2c2 + 62c2. [100a]. On the sides of an equilateral triangle three squares are described. Show that **the area of the triangle formed by joining the centres of these** squares=area equilateral triangle [101a]. A fleet of steam- vessels, under the command of an admiral,... | |
| Isaac Todhunter - Plane trigonometry - 1874 - 360 pages
...the sides BC, С A, AB; and circles are described about the triangles PA'B1, PffC', PC' A'. Shew that **the area of the triangle formed by joining the centres of these circles is one-fourth of the area of** thte triangle ABG. 45. Three circles touch each other externally: prove that the square of the area... | |
| Joseph Wilson, Samuel Robertshaw Wilson - Plane trigonometry - 1879 - 122 pages
...cos (0 — a) — у cos a. 5. On the sides of an equilateral triangle squares are described. Compare **the area of the triangle formed by joining the centres of these** squares, with that of the original triangle. EXERCISE XXIX. 1. Shew that the smallest positive value... | |
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