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.
Finding the Distance to Shore The Willis Tower in Chicago
is 1454 feet tall and is situated about 1 mile inland from the
shore of Lake Michigan, as indicated in the figure on the top
right. An observer in a pleasure boat on the lake directly in
front of the Willis Tower looks at the top of the tower and
measures the angle of elevation as 5°. How far offshore is
the boat?
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