 | John Bascombe Lock - 1882 - 378 pages
...staff h feet high stands on the top of a tower. From a point in the plain on which the tower stands the angles of elevation of the top and bottom of the flagstaff are observed to be a and /3 respectively. Prove that the height of the tower h tan a „ , . h sin... | |
 | John Bascombe Lock - Trigonometry - 1885 - 368 pages
...flagstaff 25 feet high stands on the top of a house ; from a point on the plain on which the house stands the angles of elevation of the top and bottom of the flagstaff are observed to be 60° and 45° respectively : find the height of the house above the point of observation.... | |
 | Edward Albert Bowser - Trigonometry - 1892 - 392 pages
...flagstaff 25 feet high stands on the top of a house ; from a point on the plain on which the house stands, the angles of elevation of the top and bottom of the flagstaff are observed to be 60° and 45° respectively : find the height of the house above the point of observation.... | |
 | Edward Albert Bowser - Trigonometry - 1894 - 206 pages
...flagstaff 25 feet high stands on the top of a house; from a point on the plain on which the house stands, the angles of elevation of the top and bottom of the flagstaff are observed to be 60° and 45° respectively : find the height of the house above the point of observation.... | |
 | John Bascombe Lock - Logarithms - 1896 - 242 pages
...flagstaff h feet stands on the top of a tower. From a point in the plane on which the tower stands, the angles of elevation of the top and bottom of the flagstaff are observed to be о and 0 respectively ; prove that the height of the tower is ftsi"6cosg feet, sin... | |
 | Daniel Alexander Murray - Plane trigonometry - 1899 - 350 pages
...flagstaff 30 ft. high stands on the top of a cliff, and from a point on a level with the base of the cliff the angles of elevation of the top and bottom of the flagstaff are observed to be 40° 20' and 38° 20', respectively. Find the height of the cliff. PLANE TRIGONOMETRY.... | |
 | Daniel Alexander Murray - 1906 - 466 pages
...flagstaff 30 ft. high stands on the top of a cliff, and from a point on a level with the base of the cliff the angles of elevation of the top and bottom of the flagstaff are observed to be 40° 20' and 38° 20', respectively. Find the height of the cliff. PLANE TRIGONOMETRY.... | |
 | Fletcher Durell - Plane trigonometry - 1910 - 348 pages
...longitude. 30. A flagstaff 30 ft. high stands on the top of a building. From a point on the ground, the angles of elevation of the top and bottom of the flagstaff are observed to be 41° and 36° respectively. Assuming the ground to be level, find the height of... | |
 | Daniel Alexander Murray - Plane trigonometry - 1911 - 158 pages
...flagstaff 30 ft. high stands on the top of a cliff, and from a point on a level with the base of the cliff the angles of elevation of the top and bottom of the flagstaff are observed to be 40° 20' and 38° 20', respectively. Find the height of the cliff. Let BP be the... | |
 | Fletcher Durell - Logarithms - 1911 - 336 pages
...height stands on a tower. From a position near the base of the tower, and on the same horizontal plane, the angles of elevation of the top and bottom of the flagstaff are 41° 36' [41.6°] and 22° 18' [22.3°], respectively. Find the distance and height of the tower.... | |
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... stands, the angles of elevation of the top and bottom of the flagstaff are observed to be 60° and 45° respectively : find the height of the house above the point of observation. 
