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Question: a define trigonometric leveling derive the equation to find out...

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(a) Define Trigonometric leveling. Derive the equation to find out the elevation of the object, if the base of the Object is inaccessible, the instruments stations and elevated object are in the same vertical plane and instrument axes are at the same level. (b)Two triangulation stations P & Q are 100km apart and have elevations 335 m and 355 m respectively. The intervening ground may be assumed to have a uniform elevation of 300m. Find the minimum height of signal required at Q so that line of sight may not pass near the ground 4 metres. 10 10 OR

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