25.5 T. H W Figure 13
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.
Force Tyler and his cousin Kelly have attached a rope to the branch of a tree and tied a
board to the other end to form a swing. Tyler sits on the board while his cousin pushes
him through an
the magnitude of the force Kelly must push with horizontally to keep Tyler in static
equilibrium. See Figure 13.
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