7. Ships A and B at sea are 15.5 km apart. A port, C, can be seen from the deck of each ship. The angles [5] between the line joining the ships and the lines of sight to the port are 58" and 72", respectively. How far is each ship from the port? ship A ship B. 58' 72' 15.6 km 8. From the top of a 110-m fire tower, a fire ranger observes two fires, one at an angle of depression of 5" and the other at an angle of depression of ?". [8] Assume the fires and the tower are in a straight line. Determine the distance between the fires in each case. The diagrams are not drawn to scale. a) when the fires are on the b) when the fires are on same side of the tower opposite sides of the tower 110 m 1 10 m 9. The edges of a saw tooth are 1.1 cm and 0.8 cm long. The base of the tooth is 0.6 cm [3] long. Determine the angle at which the edges meet. 1.I cm