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Mathematics, 23.11.2020 14:00 Amber423

Find an exact value. Cos(-7pi/12)
A. Sqrt 6 + sqrt 2
B. Sqrt 6 - sqrt 2 / 4
C. Sqrt 2 - sqrt 6
Sqrt 2 - sqrt 6 / 4

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Find an exact value. Cos(-7pi/12)
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