The Great
Circle Track crosses the Equator at 030°W for the first time on a bearing of
035°T. Being a Great Circle, the next time it crosses the Equator will be
exactly opposite the first point.
030°W + 180°= 150°E
The track at this point will be 035°T + 180°= 215°T
The highest latitude reached will be half way between these two points:
030°W + 90°= 060°E
Draw a circle with a horizontal line to represent the Equator and a dot in the
centre to represent the centre of the earth. Draw a vertical line from the
central dot to the North Pole.
Draw a third line to represent the Great Circle at an angle of 035° from the
vertical line. The remaining angle between the third line and the Equator =
090° - 035° = 055°.
Therefore, this third line crosses the surface of the earth at a latitude of
55°N.