A helicopter hovers 850 feet above a small island. The 50° figure shows that the angle of depression from the helicopter to point P is 50°. How far off the coast, to the nearest foot, is the island? 850 ft d= ft

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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.