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Similarities between Hyperbolic and Trigonometric Functions :
\(1)
\Both hyperbolic functions and trigonometric functions have similar looking identities like :
\(a) Argument addition,
\(b) Double argument,
\(c) Half argument etc.
\(2)
\Both hyperbolic functions and trigonometric functions have the derivatives which resemble
\each other.
\(3)
\The inner functions of the derivatives of hyperbolic functions and trigonometric functions are
\similar.
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Similarities between hyperbolic and trigonometric functions are mentioned.