 DB which stands on a horizontal plane. From a point A on this plane he finds the angle of elevation of the top of the tower to be .35°.  Plane Trigonometry - Page 16by James Morford Taylor - 1904 - 171 pagesFull view - About this book
 | Sidney Luxton Loney - Plane trigonometry - 1893 - 534 pages
...A man wishes to find the height of a church spire which stands •on a horizontal plane; at a point on this plane he finds the angle of elevation of the top of the spire to be 45° ; on walking 100 feet toward the tower he finds the corresponding angle of elevation... | |
 | Frank Castle - Mathematics - 1899 - 424 pages
...20. A man wishes to find the height of a church spire which stands on a horizontal plane ; at a point on this plane he finds the angle of elevation of the top of the spire to be 45° ; after walking 100 feet toward the spire he finds the angle of elevation to be 60°... | |
 | James Morford Taylor - Trigonometry - 1905 - 256 pages
...By SI, Сheck. AM =200 ft., MP/AM = tan 20° = 0.364. .-. MP = 200 ft. x 0.364 = 72.8 ft. by table By measurement MP = 73 ft. nearly, when AM = 200 ft....65°. Find the height of the tower. Solution 1. Let DB = y ft. О Then AD/ 'y = cot 35° = 1.4281, FIG. 16 and CD/y = cet 65° = 0.4663. .-. 100 = AD - СD... | |
 | James Morford Taylor - Trigonometry - 1905 - 256 pages
...it., and ¿MAР = 20°. By § 1, MP/ AM = tan 20° = 0.364. by table ... MP = 200 ft. x 0.364 = 72.8 ft. Check. By measurement MP = 73 ft. nearly, when...and 100 ft. nearer the tower, he finds the angle of U elevation to be 65°. Find the height of the tower. .65 Fia. i6 Solution 1. Let DB = y ft. D Then... | |
 | Fletcher Durell - Plane trigonometry - 1910 - 348 pages
...the height ' the tree. J&. A water tower 92.5 ft. high stands on a horizontal plane. An otíserver finds the angle of elevation of the top of the tower to be 52°. Find the distance of the observer from the base of the tower. Л. Pike's Peak when viewed from... | |
 | Fletcher Durell - Logarithms - 1911 - 336 pages
...Find the height of the tree. 5. A water tower 92.5 ft. high stands on a horizontal plane. An observer finds the angle of elevation of the top of the tower to be 52°. Find the distance of the observer from the base of the tower. 6. Pike's Peak when viewed from... | |
 | Earle Raymond Hedrick - Geometrical drawing - 1916 - 89 pages
...the rock finds the angle of elevation of the/00/ of the tower to be 25°. When he is 200 yards away, he finds the angle of elevation of the top of the tower to be 25°. Find the heights of the rock and of the tower. 21. The angle of depression of an object below... | |
 | John Wesley Young, Frank Millett Morgan - Functions - 1917 - 586 pages
...in case sin a = -fa and cos/3 = £$. Ans. 75 feet. 24. A man wishes to find the height of a tower CB which stands on a horizontal plane. From a point A...this plane he finds the angle of elevation of the top to be such that sin CAB = f . From a point A' which is on the line AC and 100 feet nearer the tower,... | |
 | John Wesley Young, Frank Millett Morgan - Plane trigonometry - 1923 - 154 pages
...the cliff in case sin « = ^ and }f- -Ans. 75 feet. 9. A man wishes to find the height of a tower CB which stands on a, horizontal plane. From a point...this plane he finds the angle of elevation of the top to be such that sin CAB = f . From a point A' which is on the line AG and 100 feet nearer the tower,... | |
 | 280 pages
...2. A man wishes to find the height of a church spire which stands on a horizontal plane ; at a point on this plane he finds the angle of elevation of the top of the spire to be 45°; on walking 100 feet toward the tower he finds the corresponding angle of elevation... | |
| |
