If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is

a) 77° N
b) 23° S
c) 13° E
d) 13° W
Ans: c

  If the R.L. of a B.M. is 100.00 m, the back- sight is 1.215 m and the foresight is 1.870 m, the R.L. of the forward station is

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