Consider the plane S formed by the dipole axis and the axis of earth. Let P be point on the magnetic equator and in S. Let Q be the point of intersection of the geographical and magnetic equators Obtain the declination and dip angles at P and Q.

Explanation

To solve the problem, we need to determine the declination and dip angles at two specific points: P (on the magnetic equator) and Q (at the intersection of the geographical and magnetic equators).

### Step-by-Step Solution:

1. **Understanding the Setup**:
- The Earth has two axes: the geographical axis (geographic north and south) and the magnetic axis (magnetic north and south).
- The plane S is formed by the dipole axis and the axis of the Earth.

...