A man wish to estimate the distance of a nearby tower from him. He stands at a point A in front of the tower C and spots a very distant object O in line with AC. He then walk perpendicular to AC upto B a distance of 100m and look forward at O and C again. Since O is very distant the direction AO and BO are same but he finds the line of C shift from the original line of sight by an angle 40 degree estimate the distance of the tower C from his original position A
