A submarine that has sunken to the ocean floor is being pulled up by two large freight ships on the surface of the water, as in the picture below: en The freight ships are 615 ft apart, and the cables they have each attached to the submarine measure 499 ft and 629 ft, respectively. Blank 1: Rounded to the nearest hundredth of a degree, what is the angle between the shorter cable and the surface of the water? Blank 2: Rounded to the nearest foot, what is the depth of the submarine? HINT: The answer is not 499 nor 629 ft! Blank # 1 Blank # 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.