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Trigonometry? What's trigonometry. Well, something to do with triangles, right? Right! Right triangles! In this problem, find the missing length of one of the sides. So set this up as a ratio: cosine(A) = adjacent side length divided by the length of the hypotenuse. Still not sure what to do? Then watch this video as the instructor walks through the steps.
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right triangle, sine, cosine, tangent, sides, legs, length, hypotenuse, adjacent, opposite, ratio, Trigonometry, math
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