Concept explainers
Tofind:the angle of depression from the top of the tower to a cell phone user.
Answer to Problem 29E
The angle of depression from the top of the tower to the cell phone user is
Explanation of Solution
Given:
A cellular telephone tower that is 150 feet tall
Top of mountain 1200 feet above sea level.
Concept used:
Apply the
Calculation:
Let consider the height of the telephone tower, mountain and the cell phone user to be
Therefore, the figure can be drawn as the right-angled triangle shown below.
In the figure drawn above
Therefore, it is also the angle of elevation from C to A.
Use the fact that
So, here
Shall now apply the trigonometric identity in
Hence the angle of depression from the top of the tower to the cell phone user is
Chapter 4 Solutions
EBK PRECALCULUS W/LIMITS
- Calculus: Early TranscendentalsCalculusISBN:9781285741550Author:James StewartPublisher:Cengage LearningThomas' Calculus (14th Edition)CalculusISBN:9780134438986Author:Joel R. Hass, Christopher E. Heil, Maurice D. WeirPublisher:PEARSONCalculus: Early Transcendentals (3rd Edition)CalculusISBN:9780134763644Author:William L. Briggs, Lyle Cochran, Bernard Gillett, Eric SchulzPublisher:PEARSON
- Calculus: Early TranscendentalsCalculusISBN:9781319050740Author:Jon Rogawski, Colin Adams, Robert FranzosaPublisher:W. H. FreemanCalculus: Early Transcendental FunctionsCalculusISBN:9781337552516Author:Ron Larson, Bruce H. EdwardsPublisher:Cengage Learning