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16 October, 23:31

Evaluate: cos (Arctan 15/8)

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  1. 16 October, 23:37
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    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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