From the top of a building that overlooks an ocean, an observer watches a boat sailing directly toward the building. If the observer is 143 feet above sea level and if the angle of depression of the boat changes from 21° to 42° during the period of observation, approximate the distance that the boat travels.
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.
From the top of a building that overlooks an ocean, an observer watches a boat sailing directly toward the building. If the observer is 143 feet above sea level and if the angle of depression of the boat changes from 21° to 42° during the period of observation, approximate the distance that the boat travels.
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