Surveying
If ‘δ’ is the declination of the star and ‘φ’ is the latitude of the observer then the hour angle of the star at elongation is given by

None of these
cos H = tan φ . cot δ
sin H = tan φ . cot δ
tan H = tan φ . cot δ

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Surveying
Which of the following methods of theodolite traversing is suitable for locating the details which are far away from transit stations?

Measuring angles to the point from at least two stations
Measuring distance from two points on traverse line
Measuring angle and distance from one transit station
Measuring angle at one station and distance from other

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