An irrigation system uses a straight sprinkler pipe r = 300 ft long that pivots around a central point as shown. Because of an obstacle the pipe is allowed to pivot through ? = 220° only. Find the area irrigated by this system. (Round your answer to the nearest whole number.)

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Q: 'a2 + b2 = c2 102 + 242 = c2 100 + 576 = c2 676 = c2 V676 = c %3D %3D 10 units 338 = c %3D 24 units

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Q: (a3) a = 9.3cm, b= 5.1cm, C=8.2cm

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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.