A theodolite was set up at a station P. The angle of depression to van – McqOptions

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1.	A theodolite was set up at a station P. The angle of depression to vane 2 m above the foot of a staff held at another station Q was 450. The horizontal distance between stations P and Q is 20 m. The staff reading at a benchmark S of RL 4.33.050 m is 2.905 m. Neglecting the errors due to curvature and refraction, the RL of the station Q (in m), is
A.	413.05
B.	413.955
C.	431.05
D.	435.955
Answer» C. 431.05

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