posted on Jan, 19 2014 @ 01:44 PM
4 Spray a line on the ground between two people equaling about 12 feet. Have one person stand at one end of the line, and the other person
stand at the other end.
5 Have the person on the left side of the line measure the angle between the top of the object and the reference line. The second person
should measure the angle of the object to the ground from his side. Both people measure the angle from the top object to the end of the line, and the
angle from the end of the line to the bottom of the object.
6 Insert the angle measurements into the following equation h = (L * tan a * tan d) / ( cos b * tan d + cos c * tan a). The first person's
measurements are a and b, and the second person's measurements are c and d.
7 Determine the cosine (cos) by dividing the ground line by angle a. Determine the tangent (tan) by dividing the angle measurement from the
top of the object to the ground by the bottom line measurement.
8 Complete the equation to determine the height of the object.
While it might work, it won't be very accurate, there is a lot of sources of error in the procedure.
1. 'about 12 feet' - adding in the issue of people aren't identical, that will be an issue.
2. Four angle measurements - how accurate is the average person going to be? Additiotnally those measurements need to be done fast, as the plane is
moving while you do this.
Add all of that together and do the maths, I'd be surprised if the value was within 10% of the actual value.