A rectangular block measures 12 cm by 5 cm by 4 cm (length by width by height). Point A is the top corner at (0,0,4). Point B is the midpoint of the opposite bottom edge, which has endpoints (12,0,0) and (12,5,0).
(a) Find the straight-line distance AB, giving your answer to 2 decimal places.
(b) Find the angle between AB and the base plane, to 1 decimal place.
(a)(a) Find AB to 2 decimal places.(2)
(b)(b) Find the angle between AB and the base plane to 1 decimal place.(2)
(Total for Question 9 is 4 marks)