A helicopter is hovering above a road at an altitude of 24m. At a certain time, the distance between the helicopter and a car on the road is 45.0m. Calculate the angle of depression from the helicopter from the car. 45.0 m 24 m

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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.