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.
Designing an Awning An awning that covers a sliding glass
door that is 88 inches tall forms an angle of 50° with the wall.
The purpose of the awning is to prevent sunlight from entering
the house when the angle of elevation of the Sun is more
than 65°. See the figure. Find the length L of the awning.
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