Emi is standing on a 50 m high bridge and sees two boats below. From her position, boat A has a bearing of 230°, and boat B has bearing of 120°. Emi estimates the angles of depression to be 38° and 35° for boat A and B, respectively. How far apart are the boats to the nearest tenth of a metre (one decimal place) ? S0 m 120° 230

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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.