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cosec
Combined from primary sources listed below.

In Cool§

See primary documentation in context for routine cosec. 

sub cosec(Numeric(Cool))
method cosec()

Coerces the invocant (or in sub form, its argument) to Numeric, interprets it as radians, returns its cosecant, that is, the reciprocal of its sine.

say 0.45.cosec;             # OUTPUT: «2.29903273150897␤»
say cosec(0.45);            # OUTPUT: «2.29903273150897␤»