[pmc] Documented the acot() and coth() methods
[pmc] Documented the acot() and coth() methods

tkob/parrot,parrot/parrot,tkob/parrot,FROGGS/parrot,tkob/parrot,parrot/parrot,youprofit/parrot,FROGGS/parrot,youprofit/parrot,tkob/parrot,parrot/parrot,tkob/parrot,FROGGS/parrot,youprofit/parrot,youprofit/parrot,parrot/parrot,FROGGS/parrot,youprofit/parrot,parrot/parrot,youprofit/parrot,youprofit/parrot,FROGGS/parrot,tkob/parrot,FROGGS/parrot,tkob/parrot,FROGGS/parrot,youprofit/parrot,tkob/parrot,FROGGS/parrot