COSH returns a hyperbolic cosine of a numerical expression

Syntax

COSH(NumExp)

Arguments 

• NumExp is a numerical expression 

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1. The numeric expression should be an angle specified in Radians.
2. The hyperbolic cosine COSH(x) gives a similar result as the expression: 0.5 * (EXP(x) + EXP(-x))

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