A Boeing 747-400 with a wingspan of 64.4 meters is landing at an airport. As it passes directly over an observer some distance from the airport, the observer sees that the wings subtend an angle of 1.10∘ How high is the aircraft

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Q: Write the Double-Angle Formulas?

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Q: AB is an altitude of the triangle

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Q: 22 2.

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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.