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Being on a horizontal plane, and wanting to ascertain the height of a tower, standing on the top of an inaccessible hill, there were measured, the angle of elevation of the top of the hill 40°, and of the top of the tower 51° ; then measuring in a direct...
Elements of Geometry and Trigonometry: With Applications in Mensuration - Page 209
by Charles Davies - 1886 - 324 pages

## Elements of Geometry and Trigonometry: From the Works of A.M. Legendre

Adrien Marie Legendre - Geometry - 1874 - 512 pages
...feet and 672 feet, and their included angle 55° 40'. Requir« ed the distance AB. Ans. 592.967 ft. 5. Being on a horizontal plane, and wanting to ascertain...angle of elevation of the top of the tower was 33° 45' ; required the height of the tower. Ans. 83.998 ft. 6. Wanting to know the horizontal distance...

## Elements Of Geometry And Trigonometry

Charles Davies - 1874 - 464 pages
...distance Ali. Ans. 592.907 ft. 5. Being on a horizontal plane, and wanting to ascertain the he1ght of a tower, standing on the top of an inaccessible...a direct line 180 feet farther from the hill, the PLANE TRIGONOMETRY. angle of elevation of the top of the tower was 33° 45' ; required the height of...

## Elements of Surveying and Leveling

Charles Davies - Surveying - 1883 - 578 pages
...CB = 672 yards, CA = 588 yards, = 55° 40' ; Ans. 592.967 yards. FIo. required the distance AB. 3. Being on a horizontal plane, and wanting to ascertain...angle of elevation of the top of the tower was 33° 45' : required the height of the tower. Ans. 83.998. 182 ELEMENTS OF SURVEYING. F1o. 100. AB = 536...