Sinh[ 2sin[ (2((11))^(-1)(10^((11)-1) -1)) ]° ] / Cosh[ 2sin[ (2((31))^(-1)(10^((31)-1) -1)) ]° ] = [ e^(1/φ) - e^(-1/φ) ] / [ e^(1/φ) + e^(-1/φ) ]

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