 | Alfred Wrigley - 1845 - 222 pàgines
...of elevation of the sun above the horizon. 209. Ata distance of 200 yards from the foot of a church tower, the angle of elevation of the top of the tower was 30°, and of the top of the spire on the tower 32°. Find the height of the tower and of the spire.... | |
 | War office - 1861 - 260 pàgines
...angle A, 49° 16', find the angles B and C. 9. At a distance of 300 feet from the foot of a church tower the angle of elevation of the top of the tower was 30° and of the top of the spire standing on the tower was 32°, find the height of the tower and spire.... | |
 | Alfred Wrigley - 1862 - 330 pàgines
...the earth in terms of the earth s radius. 10. At a distance of 200 yards from the foot of a church tower, the angle of elevation of the top of the tower was 30°, and of the top of the spire on the tower 32°. Find the height of the tower and of the spire.... | |
 | William Frothingham Bradbury - 1864 - 324 pàgines
...church ? 6. When a tree 25 feet high casts a shadow 100 feet long, what is the sun's altitude ? 7. From the base of a tower, the angle of elevation of the top of a second tower is 30°, and from the top of the first, which is 175 feet high, the angle of depression... | |
 | Alfred Challice Johnson - 1865 - 166 pàgines
...the former position ? Ans. 4° 1 1' 45". 25. At a distance of 2OO yards from the bottom of a church tower, the angle of elevation of the top of the tower was 30°, and of the top of the spire 32°; find the height of tower and spire. Ans. 1 1 5-47 yards, and... | |
 | Alfred Challice Johnson - 1871 - 178 pàgines
...the former position ? Ans. 4° 1 1' 45". 25. At a distance of 20O yards from the bottom of a church tower, the angle of elevation of the top of the tower was 30°, and of the top of the spire 32°; find the height of tower and spire. Ans. 1 1 5-47 yards, and... | |
 | William Frothingham Bradbury - 1872 - 262 pàgines
...a tree 25 feet high casts a shadow 100 feet long, what is the sun's altitude ? Aus. 14° 2' 10". 7. From the base of a tower, the angle of elevation of the top of a second tower is 30°, and from the top of the first, which is 175 feet high, the angle of depression... | |
 | James Hamblin Smith - 1877 - 244 pàgines
...noon is 16 feet. Find the sun's altitude. (23) At a distance of 200 yards from the foot of a church tower, the angle of elevation of the top of the tower was observed to be 30°, and of the top of the spire of the tower 32°. Find the height of the tower and... | |
 | John Bascombe Lock - 1882 - 378 pàgines
...observed to be 45°. What is the height of the column 1 (2) At a point 200 feet from, and on a level with the base of a tower, the angle of elevation of the top of the tower is observed to be 60° : what is the height of the tower? (3) From the top of a vertical cliff, the... | |
 | John Bascombe Lock - 1885 - 368 pàgines
...observed to be 45°. "What is the height of the column ? (2) At a point 200 feet from, and on a level with the base of a tower, the angle of elevation of the top of the tower is observed to be CO0 : what is the height of the tower? (3) From the top of a vertical cliff, the... | |
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At a point 200 feet from, and on a level with the base of a tower, the angle of elevation of the top of the tower is observed to be 60° : what is the height of the tower? 
