PRACTICE IT Use the worked example above to help you solve this problem. A person measures the height of a building by walking out a distance of 46.1 m from its base and shining a flashlight beam toward the top. When the beam is elevated at an angle of 38.70 with respect to the horizontal, as shown in the figure, the beam just strikes the top of the building. Find the height of the building and the distance the flashlight beam has to travel before it strikes the top of the building. (The flashlight is still 2.00 m above the ground.) height = m r = m EXERCISE HINTS: GETTING STARTED | I'M STUCK! While standing atop a building 53 m tall, you spot a friend standing on a street corner. Using a protractor and a dangling plumb bob, you find that the angle between the horizontal and the direction to the spot on the sidewalk where your friend is standing is 270. Your eyes are located 1.9 m above the top of the building. How far away from the foot of the building is your friend? m Need Help? Read It