The enter of the harbor is 24 m wide. On the sea there are 3 ships near to this harbor: ▪ „Theresa“, 36 m far from the left side of the entrance and 44 m far from the right side.
▪ „Lonely“ is exactly in the middle but 26 m far from the entrance.
▪ „Mary Sue“ is 10 m far from the right side and 24 m from the left side.
The optimal angle of view to see the entrance from a ship is 90°
Construct the situation written above (choose a right scale to model the situation on your paper) :