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Back to 10.1 Non-right Triangles: Law of Sines

10.1 Exercise 79

Avg difficulty 2.5

In order to estimate the height of a building, two students stand at a certain distance from the building at street level. From this point, they find the angle of elevation from the street to the top of the building to be 35°. They then move 250 feet closer to the building and find the angle of elevation to be 53°. Assuming that the street is level, estimate the height of the building to the nearest foot.

OpenStax Algebra and Trigonometry 2e, 10.1 Non-right Triangles: Law of Sines, exercise 79

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.