An observer is on the Calgary Tower Observation Deck, 157.5 m above the ground. She estimates the angle of depression to a nearby building as 45°. The building is 81 m away from the Calgary Tower. How tall is the building?

An observer is on the Calgary Tower Observation Deck, 157.5 m above the ground. She estimates the angle of depression to a nearby building as 45°. The building is 81 m away from the Calgary Tower. How tall is the building?

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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Question

An observer is on the Calgary Tower Observation Deck,
157.5 m above the ground. She estimates the angle of
depression to a nearby building as 45°. The building is 81 m
away from the Calgary Tower. How tall is the building?
45
81 m

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