A vertical tower stands on horizontal ground . The angle of elevation on the top T , of the tower from a point P south of the tower is 50 degree and the angle of elevation of T from a point Q west of the tower is 32 degree . Given that the distance PQ is 150 m , calculate the height of the tower .

When the question says south , does it mean exactly south of the tower ? If so , how can it be 50 degree , should be 90 degrees ??