oint A is between points B and C. The distances of B and C from point A are p00 m and 2000 m, respectively. Measured from point A, the angle of elevation f point B is 18deg30', while that of point C is unknown. The difference in the levations of B and C is 44.4 m, with C being lower than B. Considering the ffects of curvature and refraction, the value of unknown angle is nearest to: D 6deg45' D 5deg20' D 8deg15 D 7deg30'
oint A is between points B and C. The distances of B and C from point A are p00 m and 2000 m, respectively. Measured from point A, the angle of elevation f point B is 18deg30', while that of point C is unknown. The difference in the levations of B and C is 44.4 m, with C being lower than B. Considering the ffects of curvature and refraction, the value of unknown angle is nearest to: D 6deg45' D 5deg20' D 8deg15 D 7deg30'
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Point A is between points B and C. The distances of B and C from point A are 1000 m and 2000 m, respectively. Measured from point A, the angle of elevation of point B is 18deg30’, while that of point C is unknown. The difference in the elevations of B and C is 44.4 m, with C being lower than B. Considering the effects of curvature and refraction, the value of unknown angle is nearest to:
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