For the question:
An observer finds that the angle of elevation of the top of a tower from a pt A is 46 degrees. On walking 100 m closer to the ower, she finds that the angle of elevation becomes 66 degrees. Find the height of the tower to the nearest metre.
How exactly do I start this question??
let be the point above and be the point on perpendicularity.. let be the point between and
let , so that
using the middle and the right side, solve for , then substitute to solve for ..