Define angle of dip. Find the value of dip angle at any point for which the horizontal component and vertical component of earth’s magnetic field are equal.


The angle of dip is the angle formed by the magnetic field of the earth and the plane of the horizon.
Horizontal component of the earth’s magnetic field is
and, Vertical component of the earth’s magnetic field is
Thus,

Final Answer:
The value of dip angle is at any point for which the horizontal component and vertical component of earth’s magnetic field are equal.