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Two points, A and B, are 3143.50 meters apart. From a Third Point , C, an instrument is set up on the line between A and B, and 1299.25 meters from A, the measured vertical angle to A is -35° 28' and that to B is -15° 14'. Determine the difference in elevation between A and B making due allowance for the effects of curvature and atmospheric refraction. Express answer in 3 decimal places and in meter.

Two points, A and B, are 3143.50 meters apart. From a Third Point , C, an instrument is set up on the line between A and B, and 1299.25 meters from A, the measured vertical angle to A is -35° 28' and that to B is -15° 14'. Determine the difference in elevation between A and B making due allowance for the effects of curvature and atmospheric refraction. Express answer in 3 decimal places and in meter.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Two points, A and B, are 3143.50 meters apart. From a Third Point , C, an instrument is set up on the line between A and B, and 1299.25 meters from A, the measured vertical angle to A is -35° 28' and that to B is -15° 14'. Determine the difference in elevation between A and B making due allowance for the effects of curvature and atmospheric refraction. Express answer in 3 decimal places and in meter.
Transcribed Image Text:Two points, A and B, are 3143.50 meters apart. From a Third Point , C, an instrument is set up on the line between A and B, and 1299.25 meters from A, the measured vertical angle to A is -35° 28' and that to B is -15° 14'. Determine the difference in elevation between A and B making due allowance for the effects of curvature and atmospheric refraction. Express answer in 3 decimal places and in meter.
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