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The expression (cosh x - 1)/sinh x equals which half-argument value?
Asinh(x/2)
Bcosh(x/2)
Ccoth(x/2)
Dtanh(x/2)
Answer & Solution
Correct answer: D. tanh(x/2)
The tangent half-argument formula states tanh(x/2) = (cosh x - 1)/sinh x.
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