From a point P on level ground, David measures the angle of elevation to the top of a radio mast as 22 degrees. Point P is 95 m from the base of the mast.
(a)Calculate the height of the mast, correct to 1 decimal place. (3 marks)(3)
(b)David then walks towards the mast until he reaches a point Q, where the angle of elevation to the top of the mast has increased to 39 degrees. Using your answer to part (a), calculate the distance PQ, correct to 1 decimal place. (2 marks)(2)
(Total for Question 20 is 5 marks)