The vertical component of Earth's magneic field at a place is `sqrt3` times the horizontal component. What is the angle of dip at this place?

The ratio of the horizontal component to the resultant magnetic field of the earth at a given place is 0.5 What is the angle of dip at that place.

Earth's magnetic field at a place has the horizontal itensity of 4 - units and total itensity of 5 units. The angle of dip is