Is there any point on earth surface where dip angle is `90^(@)`? If yes how many such points are there.

The earth's magnetic field at geomagnetic poles has a magnitude 8xx10^(-5)T . Find the magnitude and the direction of the field at a point on the earth's surface where the radius makes an angle of 120^(@) with its axis of the earth's assumed magnetic dipole. What is the inclination dip at this point?

A earth's magnetic field at geomagnetic poles has a magnitude 6.2 xx 10^(-5) T . Find the magnitude and the direction of the field at a point on the earth's surface where the radius makes an angle of 135^@ with the axis of the earth's assumed magnetic dipole. What is the inclination (dip) at this point?

At a point A on the earth's surface of angle of dip, delta=+25^(@) . At a point B on the earth's surface the angle of dip, delta=-25^(@) . We can interpret that.

The angle of dip at a place on the earths surface gives