A pilot flying at an altitude of 1.6 km sights the runway directly in front of her. The angle of depression to the beginning of the runway is 23° and the angle of depression to the end of the runway is 12°. What is the length of the runway? Round to the nearest hundredth. 1.6 km

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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.