Chris, who is 6 feet tall, is walking away from a street light pole 30 feet high at a rate of 2 feet high at a rate of 2 feet per second.
(a) How fast is his shadow increasing in length when Chris is 24 feet from the pole? 30 feet?
(b) How fast is the tip of his shadow moving?
(c) To follow the tip of his shadow, at what angular rate must Chris be lifting his eyes when his shadow is 6 feet long?