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OpenStudy (anonymous):
Based on the given triangle, the cosine of the 30 degree angle is:
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OpenStudy (anonymous):
OpenStudy (anonymous):
It doesn't matter what triangle you're looking at. Cos(30) = 0.86602540378443864676372317075294 The cosine is also the length of the adjacent side divided by the length of the hypotenuse. This means that sqrt(3)/2 also equals 0.86602540378443864676372317075294
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