Question

Where on the surface of earth is the angle of dip zero?

Answer 1

The range of dip is from 90 degrees at the north magnetic pole and denotes the contour lines along with the dip measured at the earth surface.

This is equal are referred to as isoclinic lines and measures by locus of points. It is having zero dip is called the magnetic equator or aclinic line.

Answer 2

Yes... on the surface of earth is the angle of dip zero