So, say an object that is 10 feet tall is 100 feet away. If I hold up a ruler 3 feet away, then the object in the distance would correspond to about how many inches?
Tried using this guy: http://www.1728.org/angsize.htm to calculate the angle, which ends up being 5.7248 degrees
Then, if I solve for size using 5.7248 degrees at a distance of 3 feet I get 0.3, or 4.8 inches.
The thing is is that that does not seem accurate to me. Perhaps my perception of distance is off, but 4.8 inches looks more like a 10 foot tall object at 50 feet to me...?
I mean, it is a simple ratio really..
x/3 feet = 10 feet/100 feet right???