1. AB and CD are two vertical buildings with their bases A and C on horizontal ground. The height of AB is 30m. The angle of elevation of B as seen from C si 25 and the angle of elevation of D as seen from A is 40. Draw a diagram for this. (1 mark) Calculate The horizontal distance between the buildings, correct to 2 decimal places. (2 marks) ii) The height of CD, correct to 2 significant figures. (2 marks) iii) The angle of depression of B as seen from D. (2 marks)