marina5eltashley
marina5eltashley
19-11-2016
Mathematics
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Evaluate: cos(Arctan 15/8)
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nobillionaireNobley
nobillionaireNobley
21-11-2016
cos(arctan 15/8) = cos(arccos 8/sqrt(15^2 + 8^2)) = 8/sqrt(225 + 64) = 8/sqrt(289) = 8/17 = 0.4706
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