A group of students on a hiking trip wants to find the distance AB across a pond (see the following figure). One student suggests choosing any
point C, connecting it with B, and then finding point D such that ?DCB ?ACB and . How and why does this help in finding the distance AB?
point C, connecting it with B, and then finding point D such that ?DCB ?ACB and . How and why does this help in finding the distance AB?