A woman entering an outside glass elevator on the ground floor of a hotel glances up to the top of the building across the street and notices that the angle of elevation is 49°. She rides the elevator up three floors (60 feet) and finds that the angle of elevation to the top of the building across the street is 35°. How tall is the building across the street?
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 woman entering an outside glass elevator on the ground floor of a hotel glances up to the top of the building across the street and notices that the
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