7. At a considerable distance away from the base of a cliff, a surveyor founds the angle of elevation. To the top of a cliff to be 70°. After moving a distance of 100m in the horizontal line closer to the cliff, the angle became 50º. How high is the cliff?

7. At a considerable distance away from the base of a cliff, a surveyor founds the angle of elevation. To the top of a cliff to be 70°. After moving a distance of 100m in the horizontal line closer to the cliff, the angle became 50º. How high is the cliff?

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

7. At a considerable distance away from the base of a cliff, a
surveyor founds the angle of elevation. To the top of a cliff to
be 70°. After moving a distance of 100m in the horizontal line
closer to the cliff, the angle became 50º. How high is the cliff?

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