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of the bottom of the object, equal 27°, and of its top 19°. Required the height of the object, and the distance of the mark from its bottom. Here,
Course of Civil Engineering: Comprising Plane Trigonometry, Surveying, and ... - Page 68
by John Gregory - 1842

A Course of Mathematics: For the Use of Academies as Well as ..., Volume 1

Charles Hutton - 1831 - 660 pages
...depression were found to be, viz. of the mark left at the river's side 42°, of the bottom of the object 27°, and of its top 19'. Required the height of the...object, and the distance of the mark from its bottom ? . I height 57 26 s * I distance 150-58 EXAM. xvn. If the height of the mountain called the Peak of...

Elements of Plane Trigonometry

William Smyth - 1834 - 94 pages
...found the angle of depression of the mark by the river's side 42°, that of the bottom of the object 27°, and of its top 19°; required the height of...object, and the distance of the mark from its bottom. Ans. Height 28.63, distance 75.25 yards. 14. It is required to find the height of a castle AB, situated...

Elements of Plane Trigonometry

William Smyth - 1834 - 104 pages
...found the angle of depression of the mark by the river's side 42°, that of the bottom of the <object 27°, and of its top 19°; required the height of...object, and the distance of the mark from its- bottom. Ans. Height 28.63, distance 75.25 yards. 14. It is required to find the height of a castle AB, situated...

A Treatise on Marine Surveying

Thomas Charles Robson - 1834 - 326 pages
...at the river side 45° 55', of the bottom of the object 21° 10', and of its top 4° 53'. What was the height of the object, and the distance of the mark from its bottom? Ans. 151.15, height of the object. 313.05, distance of the mark. EXAMPLE XXVI. Being required to ascertain...

A Treatise on Surveying: Containing Theory and Practice: to which is ...

John Gummere - 1836 - 412 pages
...top of the object; I there took the angle of depression of the mark by the river's side equal 42°, of the bottom of the object equal 27°, and of its top equal 19°: required the height of the object. Calculation. 1. In the triangle ACD, are given the angle...

A Treatise on Surveying: Containing the Theory and Practice : to which is ...

John Gummere - 1841 - 468 pages
...top of the object ; I there took the angle of depression of the mark by the river's side equal 42°, of the bottom of the object equal 27°, and of its top equal 19°: required the height of the object, Calculation. 1. In the triangle ACD, are given the angle...

A Treatise on Surveying: Containing the Theory and Practice : to which is ...

John Gummere - 1846 - 566 pages
...top of the object; I there took the angle of depression of the mark by the river's side equal 42°, of the bottom of the object equal 27°, and of its top equal 19°: required the height of the object Calculation. 1. In the triangle ACD, are given the angle...

Elements of Plane Trigonometry: With Its Application to Mensuration of ...

William Smyth - 1852 - 198 pages
...found the angle of depression of the mark by the river's side 42°, that of the bottom of the object 27°, and of its top 19°; required the height of...object, and the distance of the mark from its bottom. Ans. Height 28.63, distance 75.25 yards. 15. It is required to find the height of a castle AB, situated...