JAMB - Physics (1987 - No. 32)
If the angle of declination in a place is 10oE, calculate the true geographic bearing if the compass reads N40oE
N50oE
N40oE
N30oE
N25oE
คำอธิบาย
The true declination is calculated by adding the reading of compass bearing to the declination at that place.
= N40°E + 10° = N50°E