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Documentation for sub tanh assembled from the following types:
sub tanh(Numeric(Cool))method tanh()
Coerces the invocant (or in sub form, its argument) to Numeric, interprets it as radians and returns its Tangent hyperbolicus.
say tanh(0.5); # OUTPUT: «0.46211715726001␤» say tanh(atanh(0.5)); # OUTPUT: «0.5␤»