There are three quantities which describe completely the magnetic field of earth at a place.What are they ?

The elements of earth.s magnetic field at a place are declination, dip and horizontal intensity. The vertical component of earth.s magnetic field at a given place is sqrt 3 times its horizontal component. If total intensity of earth.s magnetic field at the place is 0.4 G find the value of horizontal component of earth.s magnetic field.

The elements of earth’s magnetic field at a place are declination, dip and horizontal intensity.The vertical component of earth’s magnetic field at a given placeis , sqrt3 times its horizontal,component. If total intensity of earth’s magnetic field at the place Is 0.4G, find the value of horizontal component of earth’s magnetic field.