 From the summit of a lighthouse 85 feet high, standing on a rock, the angle of depression of a ship was 3° 38', and at the bottom of the lighthouse it was 2° 43'; find the horizontal distance of the ship, and the height of the rock.  Plane and Spherical Trigonometry - Page 109by George Neander Bauer, William Ellsworth Brooke - 1917 - 313 pagesFull view - About this book
 | Richard Abbatt - Spherical astronomy - 1841 - 234 pages
...miles. 15. From the top of Flamborough-head lighthouse, the angle of depression of a ship at anchor was 3° 38', and at the bottom of the lighthouse, the angle was 2° 43' ; required the horizontal distance of the vessel, and the height of the promontory above... | |
 | Alfred Challice Johnson - Plane trigonometry - 1865 - 166 pages
...32°; find the height of tower and spire. Ans. 1 1 5-47 yards, and 9-503 yards. 26. From the summit of a lighthouse 85 feet high, standing on a rock,...ship was 3° 38', and at the bottom of the lighthouse it was 2° 43'; find the horizontal distance of the ship, and the height of the rock. Ans. 5296-4 feet,... | |
 | Alfred Challice Johnson - Spherical trigonometry - 1871 - 178 pages
...32°; find the height of tower and spire. Ans. 1 1 5-47 yards, and 9-503 yards. 26. From the summit of a lighthouse 85 feet high, standing on a rock,...ship was 3° 38', and at the bottom of the lighthouse it was 2° 43'; find the horizontal distance of the ship, and the height of the rock. Ans. 5296-4 feet,... | |
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