4. An airplane traveling at 500mph (mile per hour) at a cruising altitude of 6.5 mi begins its descent. If the angle of descent is 30 from the horizontal, determine the new altitude after 10 min. Round the
nearest tenth of a mile.

An observer(o) spots a plane(p) taking off from a local airport and flying at a 29 degree angle horizontal to her line of sight and located directly above a tower(t). the observer also notices a bird circling directly above her. if the distance from the plane(p) to the tower(t) is 6,000ft., how far is the bird(b) from the plane(p).