Firefighting A firefighter on the ground sees fire break through a window near the top of the building. The angle of elevation to the windowsill is 28°. The angle of elevation to the top of the building is 42°. The firefighter is 75 ft from the building and her eyes are 5 ft above the ground. What roof-to-windowsill distance can she report by radio to firefighters on the roof? 42 28 75 ft

Firefighting A firefighter on the ground sees fire break through a window near the top of the building. The angle of elevation to the windowsill is 28°. The angle of elevation to the top of the building is 42°. The firefighter is 75 ft from the building and her eyes are 5 ft above the ground. What roof-to-windowsill distance can she report by radio to firefighters on the roof? 42 28 75 ft

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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Concept explainers

Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.

Question

14.
Firefighting A firefighter on the ground sees fire break through a
window near the top of the building. The angle of elevation to the
windowsill is 28°. The angle of elevation to the top of the building
is 42°. The firefighter is 75 ft from the building and her eyes are 5 ft
above the ground. What roof-to-windowsill distance can she
report by radio to firefighters on the roof?
42°
28
75 ft

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