Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!swrinde!ucsd!nosc!marlin!evansjr From: evansjr@marlin.NOSC.MIL (John R. Evans) Newsgroups: comp.lang.pascal Subject: Trigonometric function Message-ID: <1650@marlin.NOSC.MIL> Date: 1 Nov 90 14:52:12 GMT Reply-To: evansjr@marlin.nosc.mil.UUCP (John R. Evans) Organization: Naval Ocean Systems Center, San Diego Lines: 6 I would like to use the "arccos" function---but it is not standard pascal. Is there a simple way to do this using standard pascal functions such as arctan,sin, or cos?