Explain with the help of diagram the terms (i) magnetic declination and (ii) angle of dip at a given place. 

(i) Magnetic declination at a place may be defined as the angle between its magnetic meridian and the earth geographic meridian at the place. 

(ii) Angle of dip at a place is defined as the angle between the direction of intensity of earth’s magnetic field (B_E) and the horizontal direction in magnetic meridian at that place.