A star is observed at its western elongation. If the latitude of place of observation is θ, the declination of star is δ, altitude of star at elongation is α, then the hour angle of star is given by-A-cos H = cos δ . sec θB-cos H = tan θ . cot δC-cos H = tan θ . cot αD-cos H = tan δ . cot θ-B-cos H = tan θ . cot δ

Question

A star is observed at its western elongation. If the latitude of place of observation is &theta;, the declination of star is &delta;, altitude of star at elongation is &alpha;, then the hour angle of star is given by-A-cos H = cos &delta; . sec &theta;B-cos H = tan &theta; . cot &delta;C-cos H = tan &theta; . cot &alpha;D-cos H = tan &delta; . cot &theta;-B-cos H = tan &theta; . cot &delta;

APTITUDE CRACK · Accepted Answer

The correct option is  B cos H = tan &theta; . cot &delta; No answer description is available

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Q1: A star is observed at its western elongation. If the latitude of place of observation is θ, the declination of star is δ, altitude of star at elongation is α, then the hour angle of star is given by

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UPSC Civil Service Exam Questions

Q1: A star is observed at its western elongation. If the latitude of place of observation is θ, the declination of star is δ, altitude of star at elongation is α, then the hour angle of star is given by

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