Brian, an avid birdwatcher, has spotted something unusual at the top of the 35-foot tall
oak tree across the street. Eager to identify the bird, he stands in the doorway and looks
through his binoculars, so that he doesn’t scare the bird away. Brian’s eyes are 5.7 feet
off the ground, and he estimates that his angle of elevation to the bird is 55°. How far is
the bird to Brian?
