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From: rjr@mgweed.UUCP (Bob Roehrig)
Newsgroups: net.math
Subject: need help
Message-ID: <6686@mgweed.UUCP>
Date: Tue, 31-Jan-84 12:21:53 EST
Article-I.D.: mgweed.6686
Posted: Tue Jan 31 12:21:53 1984
Date-Received: Sun, 5-Feb-84 04:09:18 EST
Organization: AT&T Consumer Products - Montgomery Illinois
Lines: 10


Perhaps some math whiz can help me out with a problem.
I have a computer program that gives me an answer that is
the sin of x. How can I get the value of x without an
arc-sin function? My computer just has sin, cos, tan
and arc-tan. (I also have the formula ACS(x)=-ATN(x/sqr(-x*x+1))+pi/2
which gives me the arc-cosine function).

Tnx  Bob