Surveying
If the altitudes of a star at its upper and lower transits are 60° 30' and 19° 30' respectively, the latitude of the place, is

35°
60°
30°
45°

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Surveying
For a line AB

the forebearing of AB and back bearing of AB differ by 180°
none is correct
the forebearing of AB and back bearing of BA differ by 180°
both (A) and (B) are correct

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