Question

The angle of elevation of the top of a vertical pole from a height 1.5m above a horizontal ground is 40. The foot of the pole is on the same horizontal ground and the point of observation is 20m from pole. Find the height of pole to 3.sp

Answer 1

Draw the diagram. It should be clear that if h is the height of the pole,
(h-1.5)/20 = tan40°