Mathematics For Machine Technology
8th Edition
ISBN:9781337798310
Author:Peterson, John.
Publisher:Peterson, John.
Chapter71: The Cartesian Coordinate System
Section: Chapter Questions
Problem 2A: Find the distance y to the nearest hundredth of an inch.
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Concept explainers
Ratios
A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.
Trigonometric Ratios
Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.
Question
A helicopter hovers 1000 feet above a small island. The figure shows that the angle of depression from the helicopter to point P on the coast is 36°. How far off the coast, to the nearest foot, is the island?
Transcribed Image Text:36°
1000 ft
P
d
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