At a point A on the earth’s surface the
angle of dip, ``δ`` = +25°. At a point
B on the earth’s surface the angle of dip, ``δ``
= -25°. We can interpret that:
(1) A and B are both located in the northern
hemisphere.
(2) A is located in the southern hemisphere
and B is located in the northern
hemisphere.
(3) A is located in the northern hemisphere
and B is located in the southern
hemisphere.
(4) A and B are both located in the southern
hemisphere.