Precalculus
posted by Jayden on .
A woman who is 6 feet tall stand near a light that is 13 feet tall. Find a function for the length of her shadow in term of her distance from the base of the lamp.

If x is the distance from the lamp, and s is the length of her shadow, then using similar triangles,
13/(x+s) = 6/s
s = 6/7 x