Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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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.
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A telivision antenna stands on the edge of the top of a 52-story building. From a point 320 ft from the base of the building, the angle of elevation to the top of the antenna is 64 degrees. If each story is 12 ft high, find the height of the antenna.

A television antenna stands on the edge of the top of a 52-story building. From a point 320 ft from the base of the building, the angle of elevation to the top of the antenna is 64°. If each story is 12 ft high, find the height of the antenna.
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Transcribed Image Text:A television antenna stands on the edge of the top of a 52-story building. From a point 320 ft from the base of the building, the angle of elevation to the top of the antenna is 64°. If each story is 12 ft high, find the height of the antenna.
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