12.2.20 sin, cos, tan [Function]

sin radians => number

cos radians => number

tan radians => number

Arguments and Values::

radians—a number given in radians.

number—a number.

Description::

sin, cos, and tan return the sine, cosine, and tangent, respectively, of radians.

Examples::

      (sin 0) =>  0.0
      (cos 0.7853982) =>  0.707107
      (tan #c(0 1)) =>  #C(0.0 0.761594)

Exceptional Situations::

Should signal an error of type type-error if radians is not a number. Might signal arithmetic-error.

See Also::

asin , acos, atan, Rule of Float Substitutability