Absolutely! Draw some similar triangles. One has height of the flag pols. The other has height of the man.
Let's see what you get.
Here's my problem...
A street light is at the top of a ft. tall pole. A man ft tall walks away from the pole with a speed of feet/sec along a straight path. How fast is the tip of his shadow moving away from the pole when the man is feet from the pole?
Any suggestions on how to start out?
The ratio of their corresponding sides are similar.
so to find y, plug in all the variables into the equation below? The problem is tough for me to comprehend because we're finding how fast his shadow is moving away from the pole but do we just assume the sun is in a certain location to give us the needed length of his shadow?