12. From point B, Bob uses a clinometer to determine the angle of elevation to the top of a cliff as 38°. From point D, 68.5 m away from Bob, Dana estimates the angle CDB to be 42°, while Bob estimates that the angle CBD to be 63°. Find the height of the cliff. h 38 63 42 68.5 m D

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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12. From point B, Bob uses a clinometer to determine the angle of elevation to the top of a cliff as 38°. From point
D, 68.5 m away from Bob, Dana estimates the angle CDB to be 42°, while Bob estimates that the angle CBD to be
63°. Find the height of the cliff.
h
38
63
42
68.5 m
D
Transcribed Image Text:12. From point B, Bob uses a clinometer to determine the angle of elevation to the top of a cliff as 38°. From point D, 68.5 m away from Bob, Dana estimates the angle CDB to be 42°, while Bob estimates that the angle CBD to be 63°. Find the height of the cliff. h 38 63 42 68.5 m D
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