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OpenStudy (sagewilson):
Trigonometry Based on the given triangle, the cosine of the 30 degree (.8660) angle is: (image below) √3/2 1/2 (I've already removed this as an answer since it is incorrect) 1/√3
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OpenStudy (sagewilson):
OpenStudy (sagewilson):
I've already figured it out, the answer is √3/2
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