xa -180 180 15 - 3
ya 0 1

# Set the first part of the plot title using the -t option.
t Plot of y = cos
# Concatenate the remaining pieces using -L options.
L (P*.8) - - LB 2
L - - LN (
L (Fs) - - LC q
# "q" in Symbol font is theta.
L - - LC )

# Avoid drawing a normal x-axis label.
x ""
# Instead of a normal x-axis label, draw this label using
# the -L option with ym = -.16, to put it in the same
# position as a normal x-axis label.
L (Fs) .425 -.16 LC q
L - - LC " (degrees)"

# Similarly, draw this label using -vl with xm = -.115 to put it
# in the same position as a normal y-axis label.  (We don't need
# to suppress the normal y-axis label, because plt produces one
# only if requested explicitly.)
vl -.115 .44 LC 1 -
cos
vl (P*.8) - - LB 1 -
2
vl - - LN 1 -
(
vl (Fs) - - LC 1 -
q
vl - - LC 1 -
)