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27. A man watches a bottle rocket launch from 40 feet away. 3 seconds after liftoff he has an angI'e of elevation of 30 degrees. After 10 seconds, he has an angle of elevation of 55 degrees. Assuming the bottle rocket was launched vertically, how far did the rocket travel during the last 7 seconds? P "- 40 feet 28. A person stands at the window of a building so that his eyes are 12.6 m above the level ground. An object is on the ground 58.5 m away from the building on a line directly beneath the person. Compute the angle of depression of the person's line of sight to the object on the ground. 29. Two buildings are 80 meters and 115 meters high. Bill, standing on the taller building, could see Ben on the smaller building at an angle of depression of 19. How far apart are the buildings? 30. A small gear of radius 3 cm is turnin g with an angular velocity of 20 radians per second. It-drives a large gear of radius 15 cm. What i s the linear velocity of the teeth on the large gear? 3 1. Use the picture below to find the measure of the arc length if the radius is 8 inches