.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