 | Henry W. Jeans - Trigonometry - 1842 - 138 pages
...high, on which is a statue 50 feet high, and to an observer on the opposite bank the statue subtended •an equal angle with a man 6 feet high, standing at the base of the column ; required the width of the river. Ans. 82-5. (51o) (fig. 56). A flag-staff 1 2 feet high, on the top... | |
 | Thomas Percy Hudson - Trigonometry - 1862 - 218 pages
...by the equation „ ». sin a sin (a - fl) x> + (a + b)x=ab -. — . ->„-.. sm 7 sin (p — 7) 83. On the bank of a river there is a column 200 feet high, supporting a statue 30 feet in height : the statue, to an observer on the opposite bank, subtends the same angle as a man 6 feet... | |
 | John Walmsley - Logarithms - 1865 - 232 pages
...the tower is ß. Show that the height of the tower is a sin a sin 0 v'sin (a + ß) sin (a — ß) 24. On the bank of a river, there is a column 200 feet...man 6 feet high standing at the base of the column ; required the breadth of the river. 25. The elevation of a tower on a horizontal plane is observed... | |
 | James Hamblin Smith - Trigonometry - 1870 - 286 pages
...bottom of the wall the flag-staff subtends an angle of 10°. Find the distance of E from the wall. (10) On the bank of a river there is a column 200> feet...statue to an observer on the opposite bank subtends the same angle as a man 6 feet high standing at the base of the column. Find the breadth of the river.... | |
 | Henry William Jeans - 1873 - 292 pages
...high, on which is a statue 50 feet high, and to an observer on the opposite bank the statue subtended an equal angle with a man 6 feet high standing at the base of the column ; required the width of the river. Ans. 82-5 feet. [61a]. (Fig. 24.) The distance between two objects,... | |
 | Henry Nathan Wheeler - 1876 - 128 pages
...bottom of the wall, the flagstaff subtends an angle of 10° : find the distance of E from the wall. 29. On the bank of a river there is a column 200 feet...statue to an observer on the opposite bank subtends the same angle as a man 6 feet high standing at the base of the column : find the breadth of the river.... | |
 | Henry Nathan Wheeler - Plane trigonometry - 1876 - 130 pages
...bottom of the wall, the flagstaff subtends an angle of 10° : find the distance of E from the wall. 29. On the bank of a river there is a column 200 feet high4 supporting a statue 30 feet high ; the statue to an observer on the opposite bank subtends the... | |
 | Edward Albert Bowser - Trigonometry - 1892 - 392 pages
...distance a from it, the elevation is 18° : show that the height of the tower is •\J2 + 2 V5 120. On the bank of a river there is a column 200 feet...of the column : find the breadth of the river. Ans. ЮV115 feet. 121. A man walking along a straight road at the rate of 3 miles an hour, sees in front... | |
 | Henry Sinclair Hall, Samuel Ratcliffe Knight - Plane trigonometry - 1893 - 434 pages
...point on the opposite bank directly facing the column the statue subtends the same angle as a man 6 ft. high standing at the base of the column : find the breadth of the river. 13. A monument ABODE stands on level ground. At a point P on the ground the portions AB, AC, AD subtend... | |
 | James William Nicholson - Trigonometry - 1898 - 204 pages
...the other sides. 25. On the bank of a river there is a column 200 ft. high supporting a statue 30 ft. high ; the statue to an observer on the opposite bank subtends an equal angle with a man 6 ft. high standing at the base of the column. Required the width of the river. Ans. 10VÏÏ5ft. NOTE.... | |
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On the bank of a river there is a column 200 feet high, supporting a statue 30 feet high ; the statue to an observer on the opposite bank subtends the same angle as a man 6 feet high standing at the base of the column : find the breadth of the river. 
