a other 4 20 The plane of a dip circle is set in the

Last updated: 6/24/2023

a other 4 20 The plane of a dip circle is set in the geographical meridian and the apparent dip angle is 0 It is then set in a vertical plane aration perpendicular to the geographical meridian the apparent dip tancer becomes 0 The angle of declination a at that place is given as A tan a tan 0 tan 0 B tan a tan 0 tan 0 C tan a tan 0 tan 0 D tan a tan 0 tan 0 1