 | 22)A 235 ft tower is located on the side of a mountain that is inclined 39° to the horizontal. A guy wire is to be attached to the top of the tower and anchored at a point 57 ft downhill from the base of the tower. Find the shortest length of wire needed.
length of guy-wire =?? ft 写真添付しました。
23)To estimate the height of a building, two students find the angle of elevation from a point (at ground level) down the street from the building to the top of the building is 35° . From a point that is 400 feet closer to the building, the angle of elevation (at ground level) to the top of the building is 50° . If we assume that the street is level, use this information to estimate the height of the building.
The height of the building is ?? feet.
24) To measure the height of the cloud cover at an airport, a worker shines a spotlight upward at an angle of 80° from the horizontal. An observer 739 m away measures the angle of elevation to the spot of light to be 47°. Find the height of the cloud cover.
height = ??m
Report answer accurate to 2 decimal places.
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