Simplified Common Lisp reference
sin
Symbol class: Mathematics, Arithmetics, Logic and Comparisons
Syntax:
Symbol type: function
sinnumber => numeric value
Argument description:
number numeric value, angle in radians

SIN function computes sine of value in radians.

(sin 0.0) => 0.0
(sin 1.0) => 0.84147096
(sin 1.0d0) => 0.8414709848078965d0
(sin #c(1.0 1.0)) => #C(1.2984576 0.63496387)
Function indexFull documentation for sin (HyperSpec)