trigonometry with triangle

The pt T is the top of a vertical lighthouse.Boats are moored at pts A,B andC.The foot O of the lighthouse A,B and C are all at sea level.The boat A is 85m from the ptO and the angle of elevation of T from A is 24degress .The boats A and B are due east of lighthouse and the distance AB is 40m.The boat atC is due south of the boat at A and the angle of elevation of T from C is 18 degrees.

Caculate

1)The distance OT in m to the nearest m,

2)Thje distance OB

3)The angle of elevation of the pt T from the boat at Bin degrees to the nearest degree.

Calculate also in m to the nearest metre

4)the distance CT

5)The distance OC

6)The distance AC

7)Calculate the bearing of the boat at B from the boat at C in degrees to the nearest degree.