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A tower 125 ft. high is on a cliff on the bank of a river. From the top of the tower the angle of depression of a point on the opposite shore is 28°40' and from the base of the tower, the angle of depression of the same point is 18°20'.Find the width of the river and the height of the cliff?

A tower 125 ft. high is on a cliff on the bank of a river. From the top of the tower the angle of depression of a point on the opposite shore is 28°40' and from the base of the tower, the angle of depression of the same point is 18°20'.Find the width of the river and the height of the cliff?

Trigonometry (11th Edition)
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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5. A tower 125 ft. high is on a cliff on the bank of a river. From the top of the tower the angle of depression of a point on the opposite shore is 28°40' and from the base of the tower, the angle of depression of the same point is 18°20'.Find the width of the river and the height of the cliff?
Transcribed Image Text:5. A tower 125 ft. high is on a cliff on the bank of a river. From the top of the tower the angle of depression of a point on the opposite shore is 28°40' and from the base of the tower, the angle of depression of the same point is 18°20'.Find the width of the river and the height of the cliff?
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