A worker must lean a 22-foot ladder against the side of a building. Safety rules for the ladders the ground and the ladder should be 70° the anof ele betwe Building Ladder Ground Which equation should the worker use to determine x, the length between the base of the building and the base of the ladder? 702 = 222+x O . 22 tan 70" = 70- 22 = x D. sin 20" %3D 22

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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.