What is the name of place whre angle of dip is `0^@` and `90^@`?

Angle of dip is 90^@ at

At magnetic poles the angle of dip is

A circular coilof radius 0.157 m has 50 number of turns. It is placed such that its axis is in magnetic meridian. A dip needle is supported at the centre of the coil with its axis of rotation horizontal, and in the plane of the coil. The angle of dip is 30^(@) when a current flows through the coil. The angle of dip becomes 60^(@) on reversing the current. Find the current in the coil assuming that the magnetic field due to the coil is smaller than the horizontal component of earth's magnetic field, H =3xx10^(-5) T.

What is the maximum and minimum value of dip?

At a certain place, the angle of dip is 30^@ and the horizontal component of earth's magnetic field is 0.50 oerested. The earth's total magnetic field (in oerested) is

What is the angle of dip at a place where the horizontal and vertical component of earth magnetic field are equal?

The horizontal component of the earth's magnetic field at a place is B_H and angle of dip is 60^@ What is the value of vertical component of earth's magnetic field at equator?

What is the angle name for half a revolutin?