The captain of a small boat measures and deteremines that the angle of depression from the top of a lighthouse is 12. The captain knows that the lighthouse reaches 50 meters above sea level. Find the distance between the board and the base of the lighouse.

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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.