How to make the measurements: Trigonometric relations: cos(A) = d/z sin(A) = f/z tan(A) = f/d = /x В A h d. An object a distance, d, away having a full height, h. f is the height relative to eye level and g is the eye level height of the observer. A stick with a length, I, held a distance, x, away from eye level. The bottom of the stick is angle, A, can easily be held at eye level and the top of the stick overlaps with the top of the object regarding the observer's line of sight. Since l/x = f/d due to the similar triangles formed, the determined as well as the height of the object, f, relative to eye level, g. The full height of the object is then, h = f+g 1. What is the formula to compute the angle “A", using the object distance and its height relative to eye level? 2. What is the formula to compute the angle “A", using stick length and the distance it is held from your eye? away 3. What is the formula to compute the height of the of the object relative to eye level "f', using the object distance, stick length and the distance away that the stick is held? 4. What is the formula for the full height of the object "h", using the object distance, stick length, distance away that the stick is held, and observer's eye level height?