 | William Galbraith - Astronomy - 1834 - 454 pages
...EXAMPLE II. Wanting to know the breadth of a river, I measured 100 yards in a straight line by the side of it ; and at each end of this line I found...subtended by the other end, and a tree close by the op. posite side, to be 53° and 79° 12' ; what is its perpendicular breadth ? Ans.— 105.89. EXAMPLE... | |
 | John D. Williams - Algebra - 1840 - 634 pages
...959.5866 yards. 40. Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line close by one side of it; and at each end of this...angles subtended by the other end and a tree, close to the bank on the other side of the river, to be 53° and 79° 12'. What was the perpendicular breadth... | |
 | Horatio Nelson Robinson - Geometry - 1860 - 470 pages
...Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line on one bank ; and at each end of this line I found the angles subtended by the other end and a tree on the opposite bank of the river, to be 53° and 79° 12'. ~What, then, was the perpendicular breadth... | |
 | Charles Hutton - Mathematics - 1860 - 1020 pages
...Кхдж. XX. — Wanting to know the breadth of a river, I measured a base of .". » arris in a straight line close by one side of it; and at each end of this line . :.,-m«lt!.e angles subtended by the other end and a tree close on the bank on • >.» ,,thfr »ide... | |
 | Edward Butler (A.M.) - 1862 - 154 pages
...? EXAMPLE II. — To find the perpendicular breadth of a river, I measured 100 yards in a straight line close by one side of it, and at each end of this line I found the angle subtended by the other end and a tree on the opposite bank of the river to be 53° and 79° 12'... | |
 | Lefébure de Fourcy (M., Louis Etienne) - Trigonometry - 1868 - 350 pages
...what the distance to the fort ? Ans. 2292.26 yards. 2298.05 " / 180 TRIGONOMETRY. end of this line the angles subtended by the other end and a tree close by the bank on the other side of the river are found to be 58° and 79° 12'. What is the perpendicular breadth... | |
 | Horatio Nelson Robinson - Navigation - 1878 - 564 pages
...Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line on one bank ; and at each end of this line I found the angles subtended by the other end and a tree on the opposite bank of the river, to be 53° and 79° 12'. What was the perpendicular breadth of the... | |
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Wanting to know the breadth of a river, I measured a base of 500 yards in a straight line close by one side of it ; and at each end of this line I .found the angles subtended by the other end and a tree, close to the bank on the other side of the river,... 
