.th SIN III 3/15/72 .sh NAME sin, cos \*- trigonometric functions .sh SYNOPSIS .nf .ft B jsr pc,sin (cos) .s3 double sin(x) double x; .s3 double cos(x) double x; .fi .ft R .sh DESCRIPTION The sine (cosine) of fr0 (resp. \fBx\fR), measured in radians, is returned (in fr0). .s3 The magnitude of the argument should be checked by the caller to make sure the result is meaningful. .sh BUGS