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Comparing ray/doc/man/man1/ev.1 (file contents):
Revision 1.3 by greg, Thu Jan 1 19:31:44 2004 UTC vs.
Revision 1.4 by greg, Tue Sep 4 17:36:40 2007 UTC

#	Line 60 | Line 60 | trigonometric functions.
60		inverse trigonometric functions.
61		.TP
62		.BR "atan2(y, x)"
63	<	inverse tangent of y/x (range -pi to pi).
63	>	inverse tangent of y/x (range \-pi to pi).
64		.SH EXAMPLE
65		To pass the square root of two and the sine of .5 to a program:
66		.IP "" .2i

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