An engineer is surveying a building with a device that is 5 feet above the ground. He is 50 feet from the building and is lookin
g with an angle of elevation of 50°. How tall is the building?
1 answer:
1. Check the sketch of the problem.
2. In right triangle DCE,
tan 50 can be found to be 1.19 using a scientific calculator or other software.
x=1.19*50=59.5 (feet)
3. The height of the building is 59.5+5=64.5 (feet)
Answer: 64.5 (feet)
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