Surveying
For adjusting a quadrilateral whose both the diagonals are observed, the equations of conditions involved, are

Two angle equations and two side equations
One angle equation and three side equations
None of these
Three angle equations and one side equation

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Surveying
Pick up the correct statement from the following. The difference between the longitudes of the places is obtained.

By subtracting their longitudes if places are in the same hemisphere
All of these
By subtracting the sum of their longitudes exceeding 180° from 360° if places are in different hemispheres
By adding their longitudes if places are in the different hemispheres

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