At a point A on the earth’s surface the angle of dip, $\delta $ = + 25o. At a point B on the earth's surface the angle of dip, $\delta $ = – 25o. We can interpret that :
A is located in the southern hemisphere and B is located in the northern hemisphere.
A is located in the northern hemisphere and B is located in the southern hemisphere.
A and B are both located in the southern hemisphere.
A and B are both located in the northerm hemisphere.
