sin, cos, and tan return the sine, cosine, and tangent, respectively, of radians.
(sin 0)
→0.0
(cos 0.7853982)
→0.707107
(tan #c(0 1))
→#C(0.0 0.761594)
None.
None.
Should signal an error of type type-error if radians is not a number. Might signal arithmetic-error.
None.