Gerson W. Barbosa ' Wrote: Or, regardless the angle mode, but at the cost of 2.5 bytes and a few milliseconds more:
« OVER / 1 SWAP - DUP
ACOSH IM SWAP DUP
ACOS SIN * - SWAP SQ * *
»
Gerson, you gave 15 variations of the code!! which one d'u like best?