A dip needle lies initially in the magnetic meridian when it

Last updated: 6/9/2023

A dip needle lies initially in the magnetic meridian when it shows an angle of dip at a place The dip circle is rotated through am angle x in the horizontal plane and then it shows an angle of dip 9 Then tan 0 is tan 0 1 COS X 2 1 sin x 3 1 tan x 4 cos x