A person standing on the street looks up to the top of a building and finds the angle of elevation is 38◦. She then walks one block further away (440 feet) and finds that the angle of elevation to the top of the building is now 28◦. How far away from the building is she when she makes her second observation?
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.
A person standing on the street looks up to the top of a building and finds the
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