The angles of dip at two places are respectively `0^@` and `90^@`. Where are these values on earth?

The angle of dip at a place on the earth gives

At two different places the angles of dip are respectively 30^(@) and 45^(@) . At these two places the ratio of horizontal component of earth's magneitc field is

The angle of dip at a place on the earths surface gives

If the angle of dip at two places are 30^(@) and 45^(@) respectively, then the ratio of horizontal components of earth's magnetic field at the two places will be