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sin, cos, tan (Function)

Syntax:
— Function: sin radians → number
— Function: cos radians → number
— Function: 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, Section 12.1.3.3 (Rule of Float Substitutability)