Piraveen wants to know the height of a sign across a road. He stands directly across (perpendicular) from the sign and notices the angle of elevation to the top of the sign is 18 degrees, Piraveen then walks 40 m parallel to the road and observes the angle between the base of the sign, himself, and his previous spot is 54 degrees. What is the height, h, of the sign to the nearest tenth of a metre?

Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Piraveen wants to know the height of a sign across a road. He stands directly across (perpendicular) from the sign and notices the angle of elevation to the top of the sign is 18 degrees, Piraveen then walks 40 m parallel to the road and observes the angle between the base of the sign, himself, and his previous spot is 54 degrees. What is the height, h, of the sign to the nearest tenth of a metre?

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